Robots of Fury

The U.S. military may be struggling to sign up soldiers, but it's recruiting plenty of robots. Predator drones have become a key part of the arsenal, and robots are being used to defuse roadside bombs. The U.S. military's Defense Advanced Research Projects Agency sponsors a competition to develop an unmanned vehicle that can operate in urban environments. Congress has set a goal that one-third of the military's "operational ground combat vehicles" be unmanned by 2015.