Military Drones Present And Future: Visual TourThe Pentagon's growing fleet of unmanned aerial vehicles ranges from hand-launched machines to the Air Force's experimental X-37B space plane.
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The RQ-4 Global Hawk, like many military drones, is designed to gather intelligence, surveillance and reconnaissance data. Air Force and Navy officials have discussed joint training with the Northrop Grumman-made RQ-4.
Image credit: Air Force
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