GPS jamming looks more like a weapon for a swarm attacking an urban target rather than as a way of stopping a swarm

Thursday, July 25th, 2024

Swarm Troopers by David HamblingEver since radios have been used in warfare, David Hambling explains (in Swarm Troopers), there have been efforts to interfere with them:

Britain’s Royal Navy experimented with broadcasting signals to interfere with enemy communication as far back as 1902, just five years after the first radios were installed on ships. By WWI, the use of radio was more sophisticated, and so were countermeasures. The German Zeppelins used fixes from radio stations to navigate; so on the night of 19 October 1917, the French switched radio broadcasts from the Eiffel Tower to another station to send the airships off course. When the Germans started using their own transmitters for navigation, the Allies drowned these out with louder transmissions on the same wavelength, possibly the first attempt to deliberately jam radio reception.

[…]

The first radio-guided weapon to see action was the German FS-1400 or Fritz-X developed in WWII. This was a three-thousand-pound glide bomb designed to attack heavily armored battleships and cruisers. It was a simple bomb fitted with small fins worked by radio control. A flare on the tail of the bomb allowed the bomb aimer to follow its progress and adjust its course with simple up-down, left-right corrections.

[…]

The Allies captured Fritz-X missiles and control equipment, and had developed effective countermeasures within a matter of months.

The British Type 650 Transmitter, and jammers from the US Naval Research Laboratory and Harvard’s Radio Research Laboratory, nullified the Fritz-X. The jammer steered the bomb as far over in one direction as possible, overriding the operator’s commands. From being a guaranteed hit, it became a guaranteed miss. The Germans dropped the idea of radio guidance, and the next version of the Fritz-X was guided via a wire spooling out of the back of the missile.

[…]

At its simplest, jamming may simply mean broadcasting noise in the frequency band that the receiver is operating in. This sort of brute force jamming is rare in military circles, where communications tend to hop from one frequency to another at rapid intervals, and it is difficult to jam the entire spectrum with enough power. Smart jammers detect and analyze an opponent’s communications and can selectively jam only in the ranges where needed. Jammers are also likely to be directional, rather than blasting out noise in all directions.

In the Iraq and Afghan conflicts, tactical jamming took on a new urgency. Insurgents had started triggering bombs using cheap cell phones. Special countermeasures were fielded to block the signals; the Pentagon spent some $17 billion on electronic countermeasures with some fifty thousand jamming units being issued. These included portable Warlock Green units for foot soldiers, which are credited with saving many lives.

[…]

It is notable that the 2014 Black Dart exercise included an EA-18 Growler, the most modern electronic warfare aircraft in the Air Force’s inventory, equipped with a range of powerful jammers. When the radio signal to a drone is jammed, it is usually programmed to return to the last point where it could communicate or simply return to base.

[…]

There is a growing interest in free-space optical communications, sometimes described as “like broadband over optical fiber, but without the fiber.” The laser signal is beamed through the air to the receiver. This method only works over line of sight (obviously enough) and, because of atmospheric effects, the range tends to be limited to a mile or so. It can carry as much data as a broadband fiber optic cable and would be ideal for a swarm of drones forming a mesh network. Because it does not rely on radio waves, optical communication cannot be jammed or hacked into.

In a more low-tech version of optical communication, researchers at the Postgraduate Naval Center in Monterey have looked at communicating via QR codes as a form of “digital semaphore.”

[…]

The team found that QR codes could be read from over five hundred feet away. A swarm could pass messages between members to coordinate its actions.

[…]

An artillery shell is out of control as soon as it leaves the barrel, as is a heat-seeking missile when it leaves the rails. Some missiles, designed to target air defense radar, already pick their own targets. The distinction between controlled and uncontrolled is subtler than you might expect.

[…]

If blocking communications does not work, we can try another weak point, navigation. A human pilot has many ways of finding their way around, but most drones only have GPS. The power of the Global Positioning System’s signal has been compared to a car headlight over ten thousand miles away, making it an easy signal to jam.

However, anti-jamming measures are getting better. Raytheon has developed a sophisticated anti-jam device for GPS called Landshield built around a controlled pattern reception antenna. This has an array of receiving elements that combine to cancel out the jamming from any given direction. When a jamming signal is detected, the array automatically nulls it out. It is like looking through a cardboard tube so you can see a faint light in the distance without being dazzled by lights nearby.

Raytheon’s previous generation of anti-jam GPS was the Advanced Digital Antenna Platform, which weighed about ten pounds and was the size of a telephone directory. The new Landshield fits on a silicon chip and may be integrated with military GPS devices, from portable units used by individual soldiers to the GPS-guided Paveway bomb and, of course, drones.

[…]

On Monday, 22 January 2007, an electronic warfare exercise being carried out in San Diego harbor accidentally jammed GPS signals across the city. Disruption started almost immediately. The emergency paging system at a hospital stopped functioning. The automated harbor traffic management system stopped working, threatening to throw the port into chaos. Air traffic control at San Diego airport reported problems with their system for tracking incoming aircraft. Some bank ATMs reportedly stopped giving out money.

The reason for this disruption is that many modern systems use the precision time signal from GPS satellites. In some cell phone networks the signal is used to give each mast a unique identity; if it is lost, the mast drops off the network. GPS timing signals time-stamp financial transactions to prevent fraud, and this may be why the cash machines stopped working. Power utilities use the GPS time signal to keep alternating current from different power plants in phase across the grid. If this is lost, then attempts to switch power supplies to channel power to where it is needed become inefficient as the out-of-phase currents clash. This may ultimately produce blackouts.

GPS jamming looks more like a weapon for a swarm attacking an urban target rather than as a way of stopping a swarm.

This vulnerability is one reason why alternatives to GPS are a hot topic. One such is the system developed by Australian company Locata. This uses a network of ground-based ‘pseudo-satellites’ which give a more accurate fix and would require vastly more powerful jammers to block.

[…]

You can already navigate urban areas without GPS thanks to Wi-Fi. Each Wi-Fi hotspot has its own fingerprint, including a Service Set ID and Media Access Control address, and transmits them continuously. Service providers including Google and Navizon map out the location of each node; by identifying those closest to you, you can pinpoint your location within less than a hundred feet.

Other researchers are navigating using “signals of opportunity,” including not only Wi-Fi but cell phone signals, radio and television transmitters, and other sources of radio waves. These may not be as accurate as GPS, but they can be used indoors as well as out, and cannot be stopped except by jamming absolutely everything.

[…]

Tomahawk cruise missiles were originally equipped with terrain-matching radar to compare the scenery with an electronic landscape map to determine their location. The difference now is that every smartphone has the storage and processing power to scan the scenery and find out where it is.

The entire network costs less than a pair of Patriot air-defense missiles

Wednesday, July 24th, 2024

Ukraine has a network of almost 10,000 acoustic sensors scattered around the country that locate Russian drones and send targeting information to soldiers in the field who gun them down:

Dubbed “Sky Fortress,” the concept was developed by two Ukrainian engineers in a garage who put a microphone and a cell phone on a six-foot pole to listen for one-way UAVs, said Gen. James Hecker, commander of U.S. Air Forces in Europe and Africa.

“They put about 9,500 of these within their nation and now they get very accurate information that is synthesized in a central computer and sent out to mobile fire teams. And on an iPad, they get a route of flight of these one-way UAVs coming in, and they have a triple-A [anti-aircraft] gun and a person with six hours of training can shoot these down,” Hecker told reporters at the Royal International Air Tattoo on Saturday.

About three months ago, Russia sent a salvo of 84 UAVs into Ukraine, and the system helped the defending troops shoot down all but four, Hecker said.

The system was so effective that the engineers behind the system were invited to demo it at Ramstein Air Base in Germany, Hecker said. Other countries are looking at acoustic sensors, he added, noting that Romania recently did a demo with the system.

Each sensor costs about $400 to $500, he said, which suggests that the entire network costs less than a pair of Patriot air-defense missiles.

There was no need for a pressure suit

Tuesday, July 23rd, 2024

Area 51 by Annie JacobsenOn April 25, 1962, Annie Jacobsen explains (in Area 51), the “Oxcart” was ready, and it was time for Lockheed test pilot Louis Schalk to suit up:

Two physiological support division officers helped Schalk into a flight suit, which looked like a coverall. There was no need for a pressure suit because today Schalk was only going to make a taxi test. Out on the tarmac, an engineer rolled up a metal set of stairs and Schalk climbed up into the strange-looking aircraft.

[…]

Lou Schalk fired up the engines and began rolling down the runway for the taxi test. To everyone’s surprise, including Lou Schalk’s, the aircraft unexpectedly got lift. Given the enormous engine power, the aircraft suddenly started flying—lifting up just twenty feet off the ground. Stunned and horrified, Kelly Johnson watched from the control tower. “The aircraft began wobbling,” Johnson wrote in his notes, which “set up lateral oscillations which were horrible to see.” Johnson feared the airplane might crash before its first official flight. Schalk was equally surprised and decided not to try to circle around. Instead he set the plane down as quickly as he could. This meant landing in the dry lake bed, nearly two miles beyond where the runway ended. When it hit the earth, the aircraft sent up a huge cloud of dust, obscuring it from view. Schalk turned the plane around and drove back toward the control towers, still engulfed in a cloud of dust and dirt. When he got back, the Lockheed engineers ran up to the airplane on the metal rack of stairs. Kelly Johnson had only four words for Schalk: “What in Hell, Lou?” For about fifteen very tense minutes, Johnson had thought Lou Schalk had wrecked the CIA’s only Oxcart spy plane.

The following day, Schalk flew again, this time with Kelly Johnson’s blessings but still not as an official first flight. Harry Martin was standing on the tarmac when the aircraft took off. “It was beautiful. Remarkable. Just watching it took your breath away,” Martin recalls. “I remember thinking, This is cool. And then, all of a sudden, as Schalk rose up in the air, pieces of the airplane started to fall off!” The engineers standing next to Martin panicked. Harry Martin thought for sure the airplane was going to crash. But Lou Schalk kept flying. The pieces of the airplane were thin slices of the titanium fuselage, called fillets. Their sudden absence did not affect low-altitude flight. Schalk flew for forty minutes and returned to Area 51. It was mission accomplished for Schalk but not for the engineers. They spent the next four days roaming around Groom Lake attempting to locate and reattach the pieces of the plane. Still, it was a milestone for the CIA. Three years, ten months, and seven days had passed since Kelly Johnson first presented his plans for a Mach 3 spy plane to Richard Bissell, and here was the Oxcart, finally ready for its first official flight.

[…]

Schalk traveled up to thirty thousand feet, flew around in the restricted airspace for fifty-nine minutes, and came back down. His top speed was four hundred miles per hour.

Some types of radar may be powerful enough to qualify as microwave weapons

Thursday, July 18th, 2024

Swarm Troopers by David HamblingSome types of radar may be powerful enough to qualify as microwave weapons, David Hambling explains (in Swarm Troopers:

The latest upgrade to the Active Electronic Steered Array (AESA) radar on the F-22 and F-15 fighters, known as APG-63(V)2, is said to be powerful enough to damage the guidance electronics on incoming cruise missiles at close range. This might be a better way for a fighter to tackle drones, as it has an unlimited supply of ammunition and can zap them one after the other.

[…]

It is possible to shield electronics against EMP by placing them inside a conducting “Faraday cage” and ensuring that any external receivers such as antenna are protected. This is easier with a small device, such as the control system for a small drone, than a large one. In addition, the dispersed nature of the swarm means the geometry of the attack will only be favorable for some of them, and much of the swarm is likely to survive a single pulse.

Our scientists would need to know what to look for

Tuesday, July 16th, 2024

Area 51 by Annie JacobsenJames Killian was the 10th president of the Massachusetts Institute of Technology, from 1948 until 1959, and Chair of the President’s Intelligence Advisory Board under John F. Kennedy, where, Annie Jacobsen explains (in Area 51), he organized, oversaw, and then tried to cover up the facts regarding two of the most dangerous weapons tests in the history of the nuclear bomb:

Two thermonuclear devices, called Teak and Orange, each an astonishingly powerful 3.8 megatons, were exploded in the Earth’s upper atmosphere at Johnston Atoll, 750 miles west of Hawaii. Teak went off at 252,000 feet, or 50 miles, and Orange went off at 141,000 feet, 28 miles, which is exactly where the ozone layer lies. In hindsight, it was a ludicrous idea. “The impetus for these tests was derived from the uncertainty in U.S. capability to discern Soviet high-altitude nuclear detonation,” read one classified report. Killian was in charge of the tests, and his rationale for authorizing them was that if sometime in the future the Soviets were to detonate a high-altitude nuclear bomb, our scientists would need to know what to look for.

Instead of being difficult to detect, a nuclear bomb exploding in the ozone layer was instantly obvious in horrific and catastrophic ways. The fireballs produced by both Teak and Orange burned the retinas of any living thing that had been looking up at the sky without goggles within a 225-mile radius of the blast, including hundreds of monkeys and rabbits that Killian authorized to be flown in airplanes nearby. The animals’ heads had been locked in gadgets that forced them to witness the megaton blast. From Guam to Wake Island to Maui, the natural blue sky changed to a red, white, and gray, creating an aurora 2,100 miles along the geomagnetic meridian. Radio communication throughout a swath of the Pacific region went dead.

“We almost blew a hole in the ozone layer,” explains Al O’Donnell, the EG&G weapons test engineer who in the twelve years since Crossroads had wired over one hundred nuclear bombs, including Teak and Orange. O’Donnell was standing on Johnston Island, 720 miles southwest of Honolulu, on August 1, 1958, when the Teak bomb went off. Due to a “program failure” on the Redstone missile system (which carried the warhead to its target), the rocket went straight up and detonated directly above where O’Donnell and the rest of the arming and firing party were working. The bomb was supposed to have detonated twenty-six miles to the south. In a sanitized film record of the event, men in flip-flops and shorts can be seen ducking for cover as a phenomenal fireball consumes the sky overhead. “It was scary,” O’Donnell sighs, remembering the catastrophic event as an old man, half a century later. There is a hint of resignation in his voice when he says, “But we were all used to it by then. The bombs had become too big.” In Teak’s first ten milliseconds, its fireball grew ten miles wide—enough yield to obliterate Manhattan. At H + 1 second, the fireball was more than forty miles wide, which could have taken out all five boroughs of New York City.

[…]

Killian’s high-altitude nuclear tests did not stop there. Two weeks later, another ultrasecret nuclear weapons project called Operation Argus commenced. Killian’s nuclear bomb tests had now expanded to include outer space.

[…]

On August 27, August 30, and September 6, 1958, three nuclear warheads were launched from X-17 rockets from the deck of the USS Norton Sound as the warship floated off the coast of South Africa in the South Atlantic Ocean. Up went the missiles and the warheads until they exploded approximately three hundred miles into space. This “scientific experiment” was the brainchild of a Greek elevator operator turned physicist, Nicholas Christofilos. Christofilos convinced Killian that a nuclear explosion occurring above the Earth’s atmosphere—but within the Earth’s magnetic field—might produce an electronic pulse that could hypothetically damage the arming devices on Soviet ICBM warheads trying to make their way into the United States. While the phenomenon did occur in minutiae, meaning the arming devices registered “feeling” the pulse from the nuclear blast, Christofilos was wrong about the possibility that this would actually stop incoming enemy nuclear missiles in their tracks.

[…]

On October 30, 1961, the Soviet Union detonated the largest, most powerful nuclear weapon the world had ever known. Called the Tsar Bomba, the hydrogen bomb had an unbelievable yield of fifty megatons, roughly ten times the amount of all the explosives used in seven years of war during World War II, including both nuclear bombs dropped on Hiroshima and Nagasaki. Tsar Bomba, detonated over northern Russia, flattened entire villages in surrounding areas and broke windows a thousand miles away in Finland. Anyone within a four-hundred-mile radius who was staring at the blast would have gone blind. Soviet leader Nikita Khrushchev told the United Nations Assembly that the purpose of the test was to “show somebody Kuzka’s mother”—to show somebody who’s boss.

Shooting down a $1,000 drone with a $5,000 missile is not a winning strategy

Thursday, July 11th, 2024

Swarm Troopers by David Hambling In November 1973, David Hambling explains (in Swarm Troopers), the USAF shot down a hapless drone with a carbon-dioxide gas dynamic laser:

Mobile laser weapons are currently in the range of tens of kilowatts. Unlike earlier lasers powered by chemical reactions, they are electric, so can keep firing for as long as they have power, giving them an effectively unlimited magazine. They are not powerful enough to burn through armor but are capable of destroying missiles or small drones.

The great thing about lasers versus small drones is that the cost-per-shot is so low. Shooting down a $1,000 drone with a $5,000 missile is not a winning strategy. A $1 burst of precisely-guided laser energy makes much more sense. Also, the laser does not have a limited ammunition supply, but can keep firing as long as the generator has fuel. In principle, it can keep firing for as long as the drones keep coming, though lasers still tend to overheat after a while.

[…]

Even if it does not destroy the drone outright or cause it to crash, the laser will burn out optics and damage sensitive control surfaces or other components.

[…]

Although the laser may have a range of a mile or more, as soon as it is spotted or starts firing, the drone swarm is likely to drop low and hug the ground for cover, limiting the laser’s effective range to a few hundred yards at best.

[…]

If it starts at a few hundred meters, it will be less than ten seconds before the drones are at point-blank range.

[…]

High-energy lasers operate on a single wavelength, so anything that reflects or absorbs that particular wavelength may reduce its effectiveness. The laser defense may be defeated by something as simple a mirrored nosecone, although this is not nearly as easy as it sounds. The reflective surface has to be tailored to the type of laser it is facing.

[…]

Laser protection does not need to be absolute. Protection that means that each drone takes several seconds rather than one second to destroy will guarantee success for the swarm.

Raiders of the Lost Anachronism

Wednesday, July 10th, 2024

I recently re-watched Raiders of the Lost Ark for the first time in decades, and I noticed that the film takes place in 1936 — which got me thinking about the year and what didn’t fit.

Fortunately Indy is approached by Army Intelligence, not the CIA, which didn’t exist yet, or its predecessor, the OSS, which was still a few years off, too.

What stood out though was the firearms. I couldn’t have told you what model of revolver Indy carried — apparently it was a Smith & Wesson M1917 — but it looked appropriate.

I couldn’t have told you what model of semiautomatic Indy carried, either. In fact, I didn’t remember him even carrying one, but it looked appropriate, too. It turns out the semiautomatic he used at the bar in Nepal was a Browning Hi-Power — introduced in 1935, and not comercially available for sale in the United States until decades later. This makes sense when you realize that Indy was originally envisioned as carrying a Colt 1911, and the Hi-Power is its rather similar successor — and the prop-masters found it more reliable with 9-mm blanks than the 1911 with .45 blanks.

Then the Gestapo agent pulls out his Walther P38, which, of course, was introduced in 1938. I would expect all the Nazis in a Hollywood film to be armed with the iconic Luger P08, and many are. If you pay attention, you can also catch an iconic Mauser C96 “Broomhandle” in the bar scene.

But what caught my attention was the German submachine guns. There’s a lot of fully automatic fire in the movie, and the German soldiers and Nepalese and Arab henchmen are all using MP40s, which, of course, were introduced in 1940. The MP40 did have a predecessor though, the MP38, introduced in 1938.

Apparently the German soldiers are mostly armed with the brand new Mauser Karabiner 98k bolt-action carbine, rather than the established Gewehr 98s rifle, but that’s a minor quibble.

It’s odd that large numbers of Germans are openly operating in Egypt in 1936, and its downright odd that they have a one-of-a-kind flying wing to transport the Ark:

The Flying Wing was designed for Raiders of the Lost Ark by production designer Norman Reynolds. It was inspired by the Horten Ho 229, a prototype German fighter/bomber that never entered production during World War II, and modeled after a Horten VII by the German brothers Reimar and Walter Horten. It was built in 1944 as a test bed for a bigger jet propelled Horten IX.

The design of the aircraft is similar to the Junkers G 38 that came out in the late 1920′s, particularly with regard to the landing gear, general shape and appearance. It was a flying wing based on Prof. Junkers’ own patent that predated Jack Northrop’s theories that the Horton Brothers used for their Ho 229.

The elaborate prop was built in England by Vickers Aircraft Company and painted at EMI Elstree Studios in London, before being disassembled and sent in parts to Tunisia, then rebuilt on location for filming.

After the Flying Wing was destroyed in the film in 1981, the remains sat quietly in the Tunisian desert, where parts of it was salvaged by prop collectors.

Indiana Jones with Panzerfaust
Perhaps the most anachronistic bit of military hardware though is the shoulder-fired anti-tank weapon Indy threatens to use against the Ark. The film prop is a Chinese Type 56 copy of the Soviet RPG-2, outfitted with a shoulder grip similar to an M9 Bazooka’s. The German Panzerfaust didn’t enter service until 1943. The American bazooka combined two cutting-edge innovations, shaped charges and rockets, and got shipped to our Soviet allies. Captured models inspired the German Panzerfaust and Panzerschreck.

A small drone with an electric motor is invisible

Thursday, July 4th, 2024

Swarm Troopers by David HamblingWhile a hovering drone a few tens of feet away is an easy target, David Hambling explains (in Swarm Troopers), one approaching at a hundred miles an hour is virtually impossible to hit:

Hunters have difficulty hitting flying geese at more than about eighty yards, even with the spread of shot from a shotgun. Hitting one with a rifle is harder and putting a bullet through the Kevlar wing of a drone may only make it wobble. Unlike a goose or an airplane with “wet wings” containing fuel, a drone can only be seriously damaged by hitting a vital part.

A lethal drone like Switchblade will cover that last eighty yards to the target in around two seconds and its body presents a target four inches across. It can fly at low altitude, putting it below the horizon and making it difficult to see against a cluttered background. It can attack in complete darkness, and as it was seen in the section on swarming hunters, drones will come in from several directions at once. Some may even come from vertically above the target.

[…]

Before [World War 2], it was estimated that [anti-aircraft] guns would score one hit for every two hundred rounds. In reality it took closer to twenty thousand. A shell takes ten seconds or more to reach its target at high altitude, in which time a WWII bomber will have travelled about fifty times its own length. The slightest mis-estimation of range or speed means the shell has no chance of hitting. Anti-aircraft batteries fired a curtain of shells into the path of oncoming bomber formations rather than aiming individually. The mass of shell bursts did at least act as a deterrent.

[…]

Air defenses rarely shot down attacking aircraft. Shells did not hit planes, but sprayed them with high-velocity shrapnel fragments. The shrapnel generally caused minor damage or injured crew members, but this could force an aircraft to abort its mission and send it limping home. It took a lucky hit, or the cumulative damage from several near-misses, to down a plane.

Air defenses rarely shot down attacking aircraft. Shells did not hit planes, but sprayed them with high-velocity shrapnel fragments. The shrapnel generally caused minor damage or injured crew members, but this could force an aircraft to abort its mission and send it limping home. It took a lucky hit, or the cumulative damage from several near-misses, to down a plane.

[…]

One approach was to make every fourth bullet from a machine gun a phosphorus tracer round that leaves a glowing trail. This showed the path of the bullets so the gunner could adjust his aim, directing the visible stream of bullets towards the target. Like the wall of shell bursts from larger guns, the stream of tracer was also a deterrent: it takes a steely nerve to deliberately fly into a hail of bullets.

[…]

Unlike other aircraft, the kamikazes were not deterred by slight damage. Machines guns and 20mm and 40mm cannon consistently failed to prevent a kamikaze from hitting his target. Only the big five-inch naval guns could destroy a plane with one hit.

[…]

One analyst calculates that, because they scored so many hits compared to the casualties suffered, kamikaze attacks cost the Japanese fewer planes per hit than other types of attack.

[…]

Admiral Halsey’s solution to the kamikazes was an intensive program of air strikes on their airfields. Navy carrier air wings and Army Air Force B-29s destroyed large numbers of kamikazes on the ground, ending a threat that could not be stopped by anti-aircraft guns.

[…]

The guided missile was the air-defense equivalent of the smart bomb. Instead of firing thousands of rounds and hoping for a lucky hit, a single projectile homed in on the target and guaranteed a shoot-down. Heat-seeking missiles were effective at close range, while bigger and heavier missiles with radar guidance took over at longer ranges.

In the 1960s, the US foot soldier had his personal air defense in the form of the Redeye missile. This was a portable heat-seeking missile that could take out a fast jet two miles away, an almost impossible feat even for a quadruple heavy-machine gun that had to be carried on a truck. The main problem with early versions of the Redeye was that it was purely a “revenge weapon” – it could only lock on to a jet’s exhaust from behind, so you couldn’t shoot down a plane until it had already flown over and bombed you.

In the same period, protection from heavy bombers was provided by the Nike Hercules. This missile stood forty feet high and flew at Mach 3 and had a range of eighty miles. While the Redeye carried two pounds of explosive, Nike Hercules was armed with a twenty-kiloton atomic warhead capable of bringing down a whole formation of bombers in one go.

[…]

The plan was to take the existing M48 Patton tank and fit it with a new turret armed with a pair of WWII-era 40mm guns. Manual aiming was not enough; it would be guided by the radar from an F-16 aircraft with a new computerized fire-control system. On paper, the Sergeant York looked like a sound proposition.

The result was a billion-dollar fiasco. The Patton tank chassis were worn out, giving up after three hundred miles of road tests instead of the four thousand planned. The 40mm guns had been stored badly and were in poor shape. The biggest defect was the radar; designed for air-to-air combat in the open sky, it could not deal with all the clutter at ground level. It was easily confused by things like waving trees, which it mistook for helicopters.

[…]

The modern Stinger looks a lot like the 1960s Redeye, and the Patriot missile looks like a smaller version of the old Nike. Rather than being bigger and more powerful, they are smarter and more agile. As with bombs, intelligence trumps brute force.

Modern missiles can spot targets faster and shrug off the clutter that confused Sergeant York. They are highly resistant to jamming and deception. They are harder to avoid in the dance of death known as the “terminal engagement phase,” when planes maneuver wildly in a desperate attempt to get away as the missile closes in.

Air defense has become a duel between radar operators and “defense suppression” aircraft equipped with electronic warfare pods, decoys, and missiles that home in on radar emissions. The attackers attempt to blind, confuse, or evade the defenses and get close enough to launch their missiles. A radar signal is like a searchlight on a dark night, advertising its position over a wide area. Radar operators respond by only turning their radar on at intervals, and by moving position when possible. It is a duel whose outcome is largely determined by who has the best technology.

The current refinement of the Patriot missile is state of the art. This is several generations on from the missile that was hailed (inaccurately) as the Scud-buster of the 1991 Gulf War. The fifteen hundred pound missile travels at almost a mile per second and can destroy an aircraft anywhere from treetop height to eighty thousand feet, at a range of a hundred miles away. Costing somewhere over a million dollars per shot, the Patriot is an effective weapon against a whole range of targets. A battery of Patriots can defend against attack helicopters like the Hind, strike aircraft, heavy bombers, and is now effective against Scuds and other ballistic missiles.

The recent focus has been on tweaking Patriot for missile defense because shooting down aircraft simply is not an issue. US air superiority in recent conflicts means that nobody has been in a position to bomb US forces. According to the USAF’s 2014 Posture Statement:

“Since April of 1953, roughly seven million American service members have deployed to combat and contingency operations all over the world. Thousands of them have died as they fought. Not a single one was killed by an enemy aircraft. We intend to keep it that way.”

[…]

The sharp end of a Patriot missile battery comprises four launch vehicles, each with four missiles ready to fire. In principle, a Patriot battery can take on sixteen aircraft at a time (of four times that number with new, miniature PAC-3 missiles). While two or more missiles may sometimes be launched on different trajectories at a difficult target, the battery might take out sixteen Reapers in a matter of seconds.

Whether Patriot could even hit small drones is another question entirely.

[…]

It is hard to image a three-quarter ton missile engaging a four-pound drone. And even if every missile worked perfectly, the seventeenth drone would get through — along with all those following.

Patriot missile batteries rely on radar, which is vulnerable; one hit could put the whole battery out of action. The drones might target the launch vehicles and personnel. Systems like the Patriot are not armored against attack, and the M983 trucks that transport the Patriot are as vulnerable as any other truck. Missiles are explosive targets full of flammable rocket fuel.

[…]

Nor can the problem be solved by issuing Stingers to every soldier; at over $38,000 a shot, they are too expensive to be bought in such volumes. Worse, missiles like the Stinger are heat-seekers that depend on the target having a hot engine. A small drone with an electric motor is invisible.

[…]

The USAF’s F-22A Raptor is arguably the best fighter in the world, but its six radar-guided AMRAAM missiles and two infrared Sidewinders will not dent a swarm, even if they were able to lock on. The Raptor’s 20mm cannon makes little difference. The rotary cannon has a high rate of fire to ensure a good chance of a hit, and the entire magazine is expended by six one-second bursts.

[…]

Against most opponents, air supremacy means destroying enemy air fields so their aircraft cannot take off or land. This was the answer to the kamikaze threat.

[…]

Small drones do not need a runway, air base, or hangars.

It produces enough glare inside the eye so that it is impossible to see far enough ahead to drive safely

Thursday, June 27th, 2024

Swarm Troopers by David HamblingLaser dazzlers or “ocular interrupters”, David Hambling explains (in Swarm Troopers), are a good fit with drone capabilities:

They were deployed in Iraq and Afghanistan as non-lethal weapons, especially for dealing with drivers. Shining the brilliant green light on a car windscreen signaled to a driver approaching a checkpoint that they need to stop; and when you cannot see, you cannot drive. It does not cause flash blindness, but produces enough glare inside the eye so that it is impossible to see far enough ahead to drive safely. The exact effect depends on conditions, but typically a driver would only be able to progress at 20 mph at best. The dazzling laser also prevents the target from effectively aiming a weapon at the source.

The GLARE MOUT made by B E Meyers has been used extensively by US forces in Iraq and elsewhere. It weighs under ten ounces and is normally clipped on the underside of a rifle; effective range is four hundred meters at night and perhaps half that in daytime, even though the output is barely one-eighth of a watt. Aiming it is as simple as pointing a flashlight, and it would be simple enough to link it to a drone’s camera.

[…]

Drones with laser dazzlers could close a road by dazzling drivers, or spread havoc by flying down a freeway and dazzling at random.

Tasers are also a good fit:

Modern Taser-type weapons require very little power. Early Tasers used several AA batteries, but the latest versions only need a couple of lithium batteries to give repeated five-second shocks. A drone equipped with this type of weapon can disable a human target for as long as necessary, for example to keep them out of action while the rest of the swarm completes an attack.

One soldier compares it to firing a bullet through a car

Thursday, June 20th, 2024

Swarm Troopers by David Hambling A hand grenade will do little damage to a vehicle protected by an inch of steel plate, David Hambling explains (in Swarm Troopers), but high precision and intelligent targeting make an effective substitute for brute force:

In the 1991 Gulf War, laser-guided Mk 82 bombs weighing five hundred pounds were used for “tank plinking” attacks against individual Iraqi tanks. Unlike in previous wars when dozens of bombs were needed to guarantee a hit on such a small target, laser guidance meant that a pilot could score four kills with four bombs. The bombs were accurate enough, and a bomb of this size was overkill even against heavily-armored Russian-made T-72 battle tank.

In the 2003 war in Iraq, the Hellfire missile weighing a fifth as much proved just as efficient at destroying tanks. Laser guidance meant that every shot was likely to find its mark.

[…]

The T-72 has frontal armor more than eighteen inches thick, and the Hellfire can punch through it. But tank armor is not distributed evenly.

[…]

The AT4’s warhead weighs just under a pound, and it is capable of penetrating an impressive fifteen inches of armor compared to three inches for the original bazooka. This is still not enough to take a T-72 head on — tank armor is specifically intended to defeat this sort of threat — but it means the soldier can tackle anything else on the battlefield.

[…]

From above, the T-72 is a much easier prospect. The large, flat surface of the top of the tank has comparatively thin armor; if it was as thick as the front, the tank would be too heavy to move. The top armor on the T-72 is around two inches thick, and there are spots where it is even weaker.

While a small charge can breach the armor, the damage it does — the “behind armor effect” — is limited. One soldier compares it to firing a bullet through a car — alarming for the people inside but not likely to cause real damage. The high-speed jet of metal will injure anyone it hits and may set off fuel or explosives, but in a vehicle the size of the T-72, most shots will do little harm. That happens when the shot placement is more or less random, as it is likely to be in battle using an unguided weapon like the AT-4, often at long range against a target that may be moving. In practice it usually takes multiple hits from this sort of weapon to stop a tank.

[…]

Current guided weapons sense a target and tend to aim approximately at its center of mass. (A major exception is heat-seeking missiles, which home in on hot exhaust pipes). As we have seen, a small drone has enough computing power to do something much more sophisticated.

The CIA learned what the Soviets could and could not see on their radars

Tuesday, June 18th, 2024

Area 51 by Annie JacobsenAfter Gary Powers’ U-2 got shot down, Annie Jacobsen explains (in Area 51), the CIA and the Air Force were anxious to get its Mach-3 replacement flying:

At Lockheed, each Mach 3 aircraft was literally being hand forged, part by part, one airplane at a time. The production of the aircraft, according to Richard Bissell, “spawned its own industrial base. Special tools had to be developed, along with new paints, chemicals, wires, oils, engines, fuel, even special titanium screws. By the time Lockheed finished building the A-12, they themselves had developed and manufactured thirteen million different parts.” It was the titanium that first held everything up. Titanium was the only metal strong enough to handle the kind of heat the Mach 3 aircraft would have to endure: 500-to 600-degree temperatures on the fuselage’s skin and nearly 1,000 degrees in places close to the engines. This meant the titanium alloy had to be pure; nearly 95 percent of what Lockheed initially received had to be rejected. Titanium was also critically sensitive to the chemical chlorine, a fact Lockheed engineers did not realize at first. During the summer, when chlorine levels in the Burbank water system were elevated to fight algae, inside the Skunk Works, airplane pieces started to mysteriously corrode. Eventually, the problem was discovered, and the entire Skunk Works crew had to switch over to distilled water. Next it was discovered that titanium was also sensitive to cadmium, which was what most of Lockheed’s tools were plated with. Hundreds of toolboxes had to be reconfigured, thousands of tools tossed out. The next problem was power related. Wind-tunnel testing in Burbank was draining too much electricity off the local grid. If a reporter found out about the electricity drain, it could lead to unwanted questions. NASA offered Kelly Johnson an alternative wind-tunnel test facility up in Northern California, near the Mojave, which was where Lockheed engineers ended up—performing their tests late at night under cover of darkness. The complicated nature of all things Oxcart pushed the new spy plane further and further behind the schedule.

[…]

Russia was spending billions of rubles on surface-to-air missile technology and the CIA soon learned that the Oxcart’s new nemesis was a system called Tall King. Getting hard data on Tall King’s exact capabilities before the Oxcart went anywhere near it was now a top priority for the CIA.

[…]

In 1960, “there were many CIA officers who thought ELINT was a dirty word,” recalls Gene Poteat, the engineer in charge of Project Palladium, which originated with the CIA’s Office of Scientific Intelligence.

[…]

“We needed to know the sensitivity of Soviet radar receivers and the proficiency of its operators,” Poteat explains. With Khrushchev using Cuba as a military base in the Western Hemisphere, the CIA saw an opportunity. “When the Soviets moved into Cuba with their missiles and associated radar, we were presented with a golden opportunity to measure the system sensitivity of the SA-2 aircraft missile radar,” says Poteat.

[…]

Thornton “T.D.” Barnes was a CIA asset at an age when most men hadn’t graduated from college yet. Married at seventeen to his high-school sweetheart, Doris, Barnes became a self-taught electronics wizard, buying broken television sets, fixing them up, and reselling them for five times the amount. In doing so, he went from bitter poverty—raised on a Texas Panhandle ranch with no electricity or running water—to buying his new bride a dream home before he was old enough to vote. Barnes credited his mother for his becoming one of the CIA’s most important radar countermeasure experts. “My mom saw an article on radar in Life magazine when I was no more than nine or ten. She said I should write a school report on the subject and so I did. That’s when I got bit with the radar bug.”

At age seventeen, Barnes lied about his age to join the National Guard so he could go fight in Korea. He dreamed of one day being an Army officer. Two years later he was deployed to the 38th Parallel to defend the region alongside a British and a Turkish infantry company. It was in Korea that Barnes began his intelligence career at the bottom of the chain of command. “I was the guy who sat on the top of the hill and looked for enemy soldiers. If I saw ’em coming, it was my job to radio the information back to base,” Barnes recalls. He loved the Army. The things he learned there stayed with him all his life: “Never waste a moment. Shine your boots when you’re sitting on the pot. Always go to funerals. Look out for your men.” Once, in Korea, a wounded soldier was rushed onto the base. Barnes overheard that the man needed to be driven to the hospital, but because gas was scarce, all vehicles had to be signed out by a superior. With no superior around, Barnes worried the man might die if he didn’t get help fast, so he signed his superior’s name on the order. “I was willing to take the demerit,” Barnes explains. His actions caught the attention of the highest-ranking officer on the base, Major General Carl Jark, and later earned him a meritorious award. When the war was over General Jark pointed Barnes in the direction of radar and electronics. “He suggested I go to Fort Bliss and get myself an education there,” Barnes explains. So T.D. and Doris Barnes headed to Texas. There, Barnes’s whole world would change. And it didn’t take long for his exceptional talents to come to the attention of the CIA.

Barnes loved learning. At Fort Bliss, he attended classes for Nike Ajax and Nike Hercules missile school by day and classes at Texas Western University by night for the next fifty-four months. These were the missiles that had been developed a decade earlier by the Paperclip scientists, born originally of the German V-2 rocket. At Fort Bliss, Barnes read technical papers authored by former Nazi scientists. Sometimes the Paperclip scientists taught class. “No one really thought of them as former Nazis,” says Barnes. “They were the experts. They worked for us now and we learned from them.” By early 1960, Barnes was a bona fide missile expert. Sometimes, when a missile misfired over at the White Sands Missile Range, it was T.D. Barnes who was dispatched to disarm the missile sitting on the test stand. “I’d march up to the missile, take off the panel, and disconnect the wires from the igniter,” Barnes recalls. “When you are young, it doesn’t occur to you how dangerous something is.” Between the academics and the hands-on experience, Barnes developed an unusual aptitude in an esoteric field that the CIA was just getting involved in: ELINT. Which was how at the age of twenty-three, T. D. Barnes was recruited by the CIA to participate in a top secret game of chicken with the Russians that was part of Project Palladium. Although Barnes didn’t know it then, the work he was doing was for the electronic countermeasure systems that would later be installed on the A-12 Oxcart and on the ground at Area 51.

[…]

The plan was for the airplane to fly right up to the edge of Cuban airspace but not into it. Moments before the airplane crossed into Cuban airspace, the pilot would quickly turn around and head home. By then, the Russian radar experts working the Cuban radar sites would have turned on their systems to track the U.S. airplane. Russian MiG fighter jets would be sent aloft to respond. The job of Project Palladium was to gather the electronic intelligence being sent out by the radar stations and the MiGs.

[…]

“At the time, ECM [electronic countermeasure] and ECCM [electronic counter-countermeasure] technology were still new to both the plane and the missile. We’d transmit a Doppler signal from a radar simulator which told their MiG pilots that a missile had locked on them. When the Soviet pilots engaged their ECM against us, my job was to sit there and watch how our missile’s ECCM responded. If the Soviet signal jammed our missile and made it drift off target, I’d tweak my missile’s ECCM electronics to determine what would override a Soviet ECM signal.”

[…]

“Inside the airplane, we’d record the frequencies to be replayed back at Fort Bliss for training and design. Once we got what we wanted we hauled ass out of the area to avoid actual contact with Soviet planes.”

[…]

Back at Fort Bliss, Barnes and the others would interpret what NSA had captured from the Soviet/Cuban ECM transmissions that they had recorded during the flight. In listening to the decrypted Soviet responses to the antagonistic moves, the CIA learned what the Soviets could and could not see on their radars. This technology became a major component in further developing stealth technology and electronic countermeasures and was why Barnes was later placed by the CIA to work at Area 51.

You can’t just run people over if they are in the road

Saturday, June 15th, 2024

Greg Ellifritz looks back at the “protests” of 2020 and offers his advice for surviving mob attacks on your vehicle:

One scenario that played out over and over again was when a mass of protesters blocked a road or highway. Those “protesters” would occasionally attack people in the cars that were stopped on the roadway. Others used the opportunity to carjack the victims and steal their cars. In one such carjacking attempt, an elderly man was dragged from his car by carjackers and beaten with his own oxygen tank.

[…]

Avoidance is key. Many protests and riots are either predictable or planned in advance. Stay away from the riots if you want to avoid being victimized. When you see masses of people blocking the roadways, STOP. Don’t go any farther. Do whatever necessary to change directions and get out of the area.

[…]

You can’t just run people over if they are in the road. The safest thing to do in a situation like this is to keep moving, bumping people out of the way with your car. Unfortunately, that usually isn’t legal. It’s considered vehicular assault. Even if people are illegally blocking the road, you will likely go to jail if you run them down absent a legitimate threat to your life.

[…]

The situation changes, however, once the rioters attack you or your vehicle. With your vehicle surrounded in a manner that you can’t escape and your attackers trying to burn your car, flip it over, or drag you out, it is reasonable to assume that you will suffer serious injury or death. That’s when you can start striking people with your car.

[…]

Doors locked and seat belt OFF. It should go without saying that your doors should be locked when driving.

[…]

You may not have enough time to do it, but cracking your windows and turning off your ventilation system would also be a good idea when driving in areas where crowds may gather. Windows that are down approximately 1/2” are actually harder to break than windows that are tightly closed. You want to turn off the ventilation system so you don’t get overcome by any smoke or tear gas that is in the air where you are driving. Your seat belt should be off. Seat belts will reduce your ability to draw a firearm. They will also prohibit you from making a speedy escape should your vehicle be set on fire or overturned. In general, it’s safer to stay inside the car in a crowd. If Molotov cocktails hit your car, drive quickly away. The wind will likely extinguish the burning liquid before you are hurt. If the car is disabled, and under fire attack, get out. It’s best to take your chances on foot than be trapped inside and burned alive.

[…]

Beware of other forms of roadblocks. The roadblocks designed to make you stop, may not take the form of people. The rioters will steal cars and then purposely abandon them in the middle of roadways. It causes you to stop and also prevents police/fire vehicles from getting to the scene. It’s a common occurrence around the world. Even more nefarious are homemade caltrops. A bunch of those strewn across the roadway would cause all kinds of havoc.

The cameramen were warned that it would only take the bats a few minutes to warm up and become active again

Thursday, June 13th, 2024

Swarm Troopers by David HamblingAn arsonist can do tremendous damage with one lighted match, David Hambling explains (in Swarm Troopers), and incendiaries may be the weapon of choice where the payload is limited:

Even a small fire can quickly spread to engulf a building, a city block, or a forest. This was how the Japanese hoped to inflict serious damage with the Fu-Go balloon bombs mentioned in Chapter 1.

The military have preferred to use incendiaries on a gigantic scale. In WWII in Europe, massed Allied bombers would attack first with high explosives to break open buildings, followed by a wave of incendiaries to start fires. In Japan the buildings were less solid, and Boeing B-29 Superfortresses carried out pure incendiary raids on Tokyo and other cities. They dropped the M-69, a hexagonal steel pipe three inches across and twenty inches long filled with a newly-invented jellied gasoline mixed with phosphorus known as napalm. The pipe was heavy enough to break through roof tiles and penetrate into the rooms below; a few seconds after impact, the M-69 threw out flaming gobbets of napalm, which stuck to anything and burned whatever they touched.

[…]

Thirty-eight M-69s were bundled together in a “cluster bomb” that split apart midair and scattered its contents over a wide area. Each B-29 carried forty clusters, making over fifteen hundred M-69s per aircraft.

The plan was to start so many fires at the same time that it would be impossible to extinguish them. It worked exactly as intended.

[…]

“We scorched and boiled and baked to death more people in Tokyo on that night of March 9-10 than went up in vapor at Hiroshima and Nagasaki combined,” claimed General Curtis LeMay. Although not quite accurate (the atomic bombs killed over 130,000, the Tokyo firebombing about 100,000), it shows how the atomic bomb was merely an extension of existing bombing.

[…]

In the right place, even a tiny incendiary would be practically guaranteed to start a fire. One ounce of napalm could be more effective than a dozen M-69s scattered at random, just as one aimed bullet is more effective than a thousand sprayed aimlessly.

This led to one of the most bizarre plans of the war, which makes even the Fu-Go look ordinary. It all started when biologist Dr. Lytle Adams noted that the humble bat might be capable of carrying “a sufficient quantity of incendiary material to ignite a fire.”

Project X-Ray involved capturing thousands of bats and putting them into a state of hibernation by refrigeration, taking advantage of the bats’ natural tendency to sleep when the temperature drops. Each bat could then be fitted with a tiny bomb. The bats were packed into special trays which were in turn fitted into bomb casings, which would be dropped on Japanese cities. Released mid-air the bats would naturally seek refuge and roost in the eaves of houses – after which the incendiary bomb carried by each bat would burst into flames.

The researchers found that a half-ounce bat could carry a load weighing more than itself. A suitable incendiary device was devised, a celluloid capsule filled with napalm with an igniter the size of a match head. It worked in a similar fashion to the static line used by parachutists that automatically pulls the ripcord. In this case, as soon as the bat flew free from the bomb it pulled a pin, releasing a chemical that ate through a wire and triggered the napalm in fifteen minutes.

[…]

Disaster struck at Carlsbad Auxiliary Airfield in a test when the bats were not supposed to be released. The X-Ray team was filming the effects of the bat bomb indoors. Live bombs were attached to six hibernating bats. The cameramen were warned that it would only take the bats a few minutes to warm up and become active again. Unfortunately the cameramen did not realize just how active bats can be. Frantic efforts failed to net any of the six armed bats and they flew off, seeking places to roost.

At least one of the six headed for a new control tower, another for a newly-built and unoccupied barracks building. Exactly fifteen minutes after the bombs were armed, both structures burst into flames. The fire rapidly spread in the dry desert conditions, consuming hangars and offices. It was too late to save the airfield buildings, but not too late to maintain security. Baffled firefighters who arrived to tackle the blaze were turned back from the gates while the buildings continued to burn. A few days later the burned remains were bulldozed to hide the evidence.

Flying at seventy thousand feet meant the sky above him was pitch-black

Tuesday, June 11th, 2024

Area 51 by Annie JacobsenWhile the US was developing its aerial reconnaissance technology, Annie Jacobsen explains (in Area 51), the Russians were developing their surface-to-air-missile technology:

It was sweltering hot in the ancient city of Peshawar, Pakistan, and Powers had spent the night on a cot in an aircraft hangar inside the CIA’s secret facility there.

[…]

The Agency had never attempted to fly all the way across the Soviet Union before, from the southern border near Pakistan to the northern border near the Arctic Circle. From there, Powers would fly his U-2 to a secret CIA base in Norway and land. No Agency pilot had ever taken off and landed at two different bases in a U-2.

This overflight was particularly important to the CIA. Powers would gather valuable photographic information on two key sites. The first was the Tyuratam Cosmodrome, the Soviets’ busiest missile launch base. Tyuratam was Russia’s Cape Canaveral, the place from where Sputnik had been launched. For years the CIA was aware of only one launchpad at Tyuratam. Now there were rumored to be two, and a U-2 overflight in April revealed preparations for an upcoming launch—of what exactly, the CIA wanted to know. After Tyuratam, Powers would fly across Siberia and head up to a facility at Plesetsk, 186 miles south of the city of Archangelsk, in the Arctic Circle. Plesetsk was alleged to be the Soviet’s newest missile-launch facility. Powers’s flight would cover a record 3,800 miles, 2,900 of which would be inside the Soviet Union. He would spend nine nerve-racking hours over enemy territory.

[…]

The reverse would have been unthinkable. Imagine a Russian spy plane flying unmolested over the entire United States, from the East Coast to the West, snapping photographs that could provide details at two-and-a-half-foot increments from seventy thousand feet up.

[…]

Mother Nature always had the final say. For Powers, a slight wind change meant the schedule for his mission flight that morning was disrupted yet again. Not enough to cancel the mission, but enough so that his navigational maps had to be quickly corrected. The waiting was agonizing. It was also necessary. If his photographic targets were covered in clouds, images from the U-2’s camera would be useless. The navigators needed to calculate when and if the weather would clear.

As Powers sat waiting it out, his commanding officer, Colonel Shelton, crossed the cement floor and indicated he wanted to speak with him.

Colonel Shelton extended his hand and opened his palm. At the center was a large silver coin. “Do you want the silver dollar?” the colonel asked Powers. What Shelton was offering was no ordinary American coin. It was a CIA suicide gadget, designed to conceal a tiny poison pin hidden inside. The pin, which the pilot could find in his pocket by rubbing a finger gently around the coin’s edge, was coated with a sticky brown substance called curare, the paralytic poison found in lethal Amazonian blowpipes. One prick of the poison pin and a pilot would be dead in seconds.

Gary Powers was one of the Agency’s most accomplished U-2 pilots. He had flown a total of twenty-seven missions, including ones over China. He had once suffered a potentially fatal flameout over the Soviet Union and managed to survive. On many occasions he had been offered the suicide pill, and on each previous mission he had said no. But on May 1, 1960, Powers unexpectedly accepted the pin from Colonel Shelton, then slid it into the pocket of his flight suit. Later, Powers would wonder if he’d had a premonition of what was to come.

[…]

Pilots knew never to use their radio while flying over denied territory, but they listened carefully for click codes being sent to them. A single click meant proceed. Three clicks meant turn around and head back to base.

[…]

Powers settled in for what was supposed to be a total of thirteen hours of flying time.

[…]

In Moscow, two thousand miles away to the west, it was still dark outside when Soviet premier Nikita Khrushchev sat upright in bed, awakened by a ringing telephone. Defense minister Marshal Malinovsky was on the line. A high-flying aircraft had crossed the border over Afghanistan and was headed toward central Russia, Malinovsky said. Khrushchev became enraged. Today of all days. May 1 was Russia’s national holiday. The streets were festooned with banners and ribbons for the May Day parade. This could mean only one thing, Khrushchev later told his son, Sergei. Eisenhower was ridiculing him again. The Soviet premier’s Achilles’ heel was his lack of formal education; he’d dropped out of school to work in the coal mines after the fourth grade. With his poor reading and writing skills, Khrushchev hated feeling that a more educated world leader was trying to make him appear the fool.

The Americans were especially duplicitous regarding holidays, Khrushchev believed. Four years earlier, on the Fourth of July, the Americans had double-crossed him with their first overflight of the U-2. If that overflight was a kick in the ribs, today’s overflight was a sharp poke in the eye.

[…]

“In other words, at a time when a major parade aimed at demonstrating Soviet military prowess was about to begin, a not-yet-identified foreign aircraft was flying over the heart of the country and Soviet air defenses appeared unable to shoot it down.”

Not if Khrushchev had his way. “Shoot down the plane by whatever means,” he shouted back at his defense minister. All across the country, the Soviet Air Force went on alert. Generals scrambled their fighter jets to go after Powers. In Siberia, officers from Soviet Air Defense Forces were summoned to their command posts with orders to shoot down the American spy. It was a matter of national pride. The orders came from Nikita Khrushchev himself.

[…]

Flying at seventy thousand feet meant the sky above him was pitch-black. Under normal circumstances he would have used the stars to determine where on the globe he was, but today his celestial navigation computations were unreliable—they’d been laid out for a 6:00 a.m. departure, not a 6:26 a.m. one. And so, with only a compass and sextant to keep him on track, Powers flew on. Spotting a break in the clouds, he determined his location to be just southeast of the Aral Sea, high above present-day Uzbekistan. Thirty miles to the north lay Powers’s first target: the Tyuratam Cosmodrome.

Realizing he was slightly off course, Powers was correcting back when suddenly he spotted the condensation trail of a jet aircraft below him. “It was moving fast, at supersonic speed, paralleling my course, though in the opposite direction,” Powers explained in his memoir Operation Overflight, published in 1970. Five minutes passed and now he knew at least one MiG was on his tail. Then he spotted another aircraft flying in the same direction as he was. “I was sure now they were tracking me on radar, vectoring in and relaying my headings to the aircraft” below him. But the MiG was so far below his U-2, it did not pose a real threat. Protected by height, Powers flew on. He felt confident he was out of harm’s way.

First he passed over the Ural Mountains, once considered the natural boundary between the East and the West. He headed on toward Sverdlovsk, which was situated thirteen hundred miles inside Russia. Before the Communists took over, Sverdlovsk was called Yekaterinburg. It was there in 1918 that Czar Nicholas II and his family were lined up against a kitchen wall and shot. To the Communists, the city of Sverdlovsk played an important role in the Soviet military-industrial complex, a place where tanks and rockets were built. It was also home to the Soviets’ secret bioweapons program, which on the date of Powers’s flight was not yet known to the CIA.

Nearing Sverdlovsk, Powers made a ninety-degree turn. He headed toward what appeared to be an airfield not marked on his map. Suddenly, large thunderclouds appeared, obscuring his view. He switched his cameras on. Powers had no idea that he was about to photograph a secret facility called Kyshtym 40, which produced nuclear material and also assembled weapons. Kyshtym 40 was as valuable to Russia as Los Alamos and Sandia combined were to the Americans.

On the ground, a surface-to-air missile battalion tasked with guarding Kyshtym 40 had been tracking Powers’s flight. At exactly 8:53 local time, the air defense battalion commander there gave the official word. “Destroy target,” the commander said. A missile from an SA-2 fired into the air at Mach 3. Inside his airplane, Gary Powers was making notes for the official record—altitude, time, instrument readings—when he suddenly felt a dull thump. All around him, his plane became engulfed in a bright orange flash of light. “A violent movement shook the plane, flinging me all over the cockpit,” Powers later wrote. “I assumed both wings had come off. What was left of the plane began spinning, only upside down, the nose pointing upward toward the sky.” As the U-2 spun out of control, Powers’s pressure suit inflated, wedging him into the nose of the airplane. The U-2 was crashing. He needed to get out. Thrown forward as he was, if he pushed the button to engage the ejection seat, both of his legs would be severed. Powers struggled, impossibly, against g-forces. He needed to get out of the airplane and he needed to hit the button that would trigger an explosion to destroy the airplane once he was gone, but he was acutely aware that he couldn’t get out of the airplane without cutting off his own legs. For a man who rarely felt fear, Gary Powers was on the edge of panic.

Suddenly, out of the chaos, three words came to him: Stop and think. An old pilot friend had once said that if he ever got in a jam, all he had to remember was to “stop and think.” His thoughts traveled back to his old training days at Area 51, back when the U-2 didn’t have an ejection seat. Back when escaping from the U-2 was the pilot’s job, not a mechanical one. Reaching up, Powers unlocked the airplane canopy. It flew off and sailed into the darkness. Instantly, the centrifugal force of the spinning airplane sucked him out into the atmosphere. He was free at last; all he needed to do was deploy his parachute. Then, to his horror, he realized that he was still attached to the airplane by his oxygen hoses. Powers tried to think through his options, but the g-forces were too great. There was nothing he could do anymore. His fate was out of his hands. He blacked out.

Nearly two thousand miles away, at a National Security Agency listening post in Turkey, NSA operators eavesdropped on Soviet radar operators at Kyshtym 40 as operators there tried to shoot Gary Powers’s U-2 out of the sky. The NSA had participated in many U-2 missions before. It was their job to equip CIA planes with listening systems, special recorders that gathered electronic intelligence, or ELINT. The NSA operators knew something was wrong the moment they heard a Soviet MiG pilot, the one who was chasing Powers from below, talking to the missile operators at Kyshtym 40. “He’s turning left,” the MiG pilot said, helping the missile operator to target Powers’s exact location. Just a few moments later, NSA operators heard Kyshtym 40 say that Powers’s U-2 had disappeared from their radar screens.

[…]

“Bill Bailey did not come home” was how Richard Bissell learned of the incident, in code.

[…]

As Powers floated down toward Earth, he noticed a small car driving down a dirt road alongside him, as if following his course. Finally, he made contact with the ground. The car stopped and men were helping him. One assisted with his chute. Another man helped him to his feet. A third man reached over to Powers’s survival pack and took his pistol. A crowd of approximately fifty people had gathered around. The men motioned for Powers to follow them. They loaded him into the front seat of a truck and began driving.

[…]

With the U-2 spy plane and the SA-2 missile system, the Americans and the Soviets had been playing a game of cat and mouse: constant pursuit, near captures, and repeated escapes. Now that game was over. Powers, like the mouse, had been caught. But there was a second, even greater catastrophe in the works. When the White House staff learned Powers’s U-2 had been shot down, they assumed he was dead. This was an assumption based on CIA “facts.” Richard Bissell had personally assured the president that in the unlikely event that an SA-2 missile was able to reach a U-2 and shoot it down, the pilot would not survive. “We believed that if a U-2 was shot down over Soviet territory, all the Russians would have was the wreckage of an aircraft,” Bissell later explained. And so, believing Gary Powers was dead, the White House denied that the airplane was on any kind of espionage mission, in opposition to Khrushchev’s very public accusation. For five days, the White House claimed that Gary Powers had been gathering high-altitude weather data for the National Advisory Committee for Aeronautics, or NACA.

[…]

The United States has been making a fool of Mother Russia, Khrushchev declared. The Americans had been sending spy planes over the Soviet Union for nearly four years. To underscore the significance of what had happened, Khrushchev gave a bold analogy. “Just imagine what would have happened had a Soviet aircraft appeared over New York, Chicago or Detroit? That would mean the outbreak of war!” Amid gasps of horror, Khrushchev explained how the Soviet Union had first used diplomatic channels to protest the spy flights. That he had called upon the U.N. Security Council to take action, but nothing was done. Just four days earlier, Khrushchev explained, on May 1, yet another illegal espionage mission had occurred. Only this time the Soviets had succeeded in shooting down the spy plane. The audience broke into wild cheers. Then came the heart of the matter in the form of a question. It was also Khrushchev’s bait. “Who sent this aircraft across the Soviet frontier?” he asked. “Was it the American Commander-in-Chief who, as everyone knows, is the president? Or was this aggressive act performed by Pentagon militarists without the president’s knowledge? If American military men can take such action on their own, the world should be greatly concerned.” By now, Khrushchev’s audience members were stomping their feet.

[…]

Khrushchev had laid a dangerous trap, one in which President Eisenhower got caught. The White House sent its press officer Walter Bonney to the press room to greet journalists and to tell the nation a lie. Gary Powers’s weather-sampling airplane was supposed to be flying over Turkey. Instead, it had gone astray. Two days later, on May 7, Khrushchev sprung his trap. “Comrades,” he told the parliament, who’d been gathered for a second revelatory speech. “I must let you in on a secret.” He smiled. “When I made my report two days ago I deliberately refrained from mentioning that we have the remains of the plane and we also have the pilot who is quite alive and kicking,” Khrushchev said. For the United States, it was a diplomatic disaster of the worst order.

The president was trapped. Were he to deny knowing what his “militarists” were up to, he would appear uninformed by his own military. Were he to admit that he had in fact personally authorized Powers’s flight, it would become clear he’d lied earlier when he claimed the downed airplane had been conducting weather research, not espionage. So despondent was the commander in chief about his untenable position that when he walked into the Oval Office two days later, he told his secretary Ann Whitman, “I would like to resign.” Spying on Russia and defying Soviet airspace was one thing; lying about it after being caught red-handed made the president look like a liar in the eyes of the world. In 1960, American presidents were expected to be truth tellers; there was no public precedent for lying.

Khrushchev demanded an apology from his nemesis. Eisenhower wouldn’t bow. Apologizing would only open Pandora’s box. There were too many overflights to make them transparent. There had been at least twenty-four U-2 flights over Russia and hundreds more bomber overflights by General LeMay. To reveal the dangerous game of cat and mouse that had been going on in secret—at a time when thermonuclear weapons on both sides were ready to fly—would likely shock and frighten people more than having a president who lied. A national poll revealed that more than half of adult Americans believed they were more likely to die in a thermonuclear war with the Russians than of old age. So Eisenhower made the decision to keep the focus on Gary Powers’s flight only and admit that he personally had authorized it. This was “the first time any nation had publicly admitted it was engaged in espionage,” noted Eisenhower’s lead U-2 photo interpreter at the time, Dino Brugioni.

Khrushchev could play the game too. And he did so by making a dangerous, offensive move. By the summer of 1960, he had authorized a Soviet military base to be set up in Cuba. The island, just ninety miles off the coast of Florida, was in America’s backyard. Khrushchev’s plan was to put nuclear warheads in striking distance of Washington, DC. In this way, Soviet missiles could be launched from Havana and obliterate the nation’s capital in just twenty-five minutes’ time. Khrushchev was showing Eisenhower that he could play cat and mouse too.

[…]

Powers was sentenced to ten years in prison. President Eisenhower was judged to be a “follower of Hitler,” the lowest insult in the Russian lexicon. Hitler had double-crossed Khrushchev’s predecessor, Joseph Stalin, in 1941, and the result of that double cross was twenty million Russians dead. In comparing Eisenhower to Hitler, Khrushchev was sending a clear message: diplomacy was off the table. The upcoming east-west summit in Paris was canceled.

Body armor and sandbags offer no protection from this sort of damage

Thursday, June 6th, 2024

Swarm Troopers by David HamblingConventional explosives, David Hambling explains (in Swarm Troopers), are composed of large molecules that break down and release energy:

Those bonds are unstable, and when they are broken, the explosive detonates with a velocity of more than eight thousand meters a second.

By contrast, thermobarics do not explode at all; technically, they just burn very fast. Some types have their own oxidizer, but some simply react with oxygen in the air. In its simplest form, enhanced blast can be achieved simply by adding finely powdered metal such as aluminum to an explosive charge. More sophisticated versions consist of nothing but powdered metal and oxidizer; the explosive is released into a cloud, which is then set off with devastating effects.

Thermobarics are typically several times as powerful as TNT by weight because the oxidation reaction is more energetic than the breakdown of an explosive molecule. However, what is more surprising is that thermobarics are so far more destructive than condensed explosives with the same power. This is because the blast from an expanding thermobaric fireball goes on for longer than a normal blast. It still only lasts a matter of milliseconds, but the increased duration makes it more effective at bringing down walls.

[…]

Known as the SMAW-NE (for Novel Explosive) , the new warhead contains four pounds of a mixture known as PBXIH-135, which combines a standard plastic explosive (PBX – Plastic Bonded eXplosive) with a precisely calibrated amount of finely powdered aluminum.

[…]

One limitation was that the new SMAW round was far more effective inside a building than in the open air. Marines started using a two-stage approach: firing one of the old high-explosive SMAW rounds to make a hole in a wall, then firing a thermobaric round through the hole into the interior.

[…]

You might survive a blast of forty pounds per square inch from a condensed explosive, but just ten pounds per square inch for a few milliseconds longer from a thermobaric blast will pulverize your lungs. Body armor and sandbags offer no protection from this sort of damage.

[…]

In particular, the technology for producing nanoscale particles of aluminum, and storing them safely, has progressed

[…]

Unclassified results from one Canadian research group suggest that it should be feasible to make warheads around five times as powerful as existing munitions without changing the ingredients.