In battle, hunches prove to be valuable, and now researchers are studying what that means:
“On one route sweep mission, there was a noticeable I.E.D. in the middle of the road, but it was a decoy,” said Lt. Donovan Campbell, who in 2004 led a Marine platoon for seven months of heavy fighting in Ramadi and wrote a vivid book, “Joker One,” about the experience. “The real bomb was encased in concrete, a hundred meters away, in the midst of rubble. One of my Marines spotted it. He said, ‘That block looks too symmetrical, too perfect.’ ”Lieutenant Campbell had the area cleared and the bomb destroyed.
“Unless you know what rubble in that part of Iraq looks like, there’s no way you’d see that,” he said. “I had two guys, one we called Hound Dog, who were really good at spotting things that didn’t fit.”
The men and women who performed best in the Army’s I.E.D. detection study had the sort of knowledge gained through experience, according to a preliminary analysis of the results; but many also had superb depth perception and a keen ability to sustain intense focus for long periods. The ability to pick odd shapes masked in complex backgrounds — a “Where’s Waldo” type of skill that some call anomaly detection — also predicted performance on some of the roadside bomb simulations.
“Some of these things cannot be trained, obviously,” said Jennifer Murphy, a psychologist at the Army Research Institute and the principal author of the I.E.D. study. “But some may be; these are fighters who become very sensitive to small changes in the environment. They’ll clear the same road every day and notice ridiculously subtle things: this rock was not here yesterday.”