Slideshow: Revenge of the Killer Drones

Unmanned military aircraft have become valuable spying tools, but now the Pentagon wants them ready to shoot to kill as well. A combat-ready prototype will drop its first test bomb this week. Noah Shachtman reports from Arlington, Virginia.
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A rendering of drone X-45C's weapons aresenal. Drones have quickly become a central part of U.S. military efforts because they can hang over a combat zone for hours on end.Courtesy of Joint Unmanned Combat Air Systems

See related story: Revenge of the Killer Drones

A view of the initial climb from the nose camera during one of the drone test flights.

A view of the initial climb from the nose camera during one of the drone test flights.

Courtesy of Joint Unmanned Combat Air Systems
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Delivery of one of the drones on a C-5A Galaxy.

Courtesy of Joint Unmanned Combat Air Systems