War spurs innovation, and U.S. soldiers are seeing a lot of it. How well is the new equipment performing in Iraq? href="http://www.popsci.com/popsci/slideshow/2006/c87d8069b864b010vgnvcm1000004eecbccdrcrd.html"
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As often happens during a crime, a victim gets only a brief glance at the assailant. Later, when police ask him for a description of the perpetrator, he
has trouble recalling details. But now, with new identification software developed by