Tiny spy aircraft.

• Position: Hit

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* Miniaturized drones--which come in a wide variety of designs and brand names--have finally given soldiers and Marines on the ground their own "eyes" on the battlefield. Mini-drones were once seen primarily among U.S. special operations forces, but they are now becoming mainstream, and are increasing their presence in all branches of the military. The newest models that troops have deployed in combat have received praise for their ease of use and their convenient size. They are foldable, so soldiers can stuff them in their rucksacks. That makes them popular with troops who don't need to be saddled with more heavy gear.

Mini-drones come with forward and side-looking cameras so they can be flown over and around buildings to help...