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Long haul Hawk
The Air Force's Global Hawk made aerospace history as the first UAV to fly without refueling 7,500 miles from Edwards Air Force Base, Calif., to Australia.
Spc. Michael Rodenberg, left, and Sgt. Joshua Harris, perform preflight checks of the Raven UAV. This tiny UAV, with a wingspan of 4.5 feet, flies its missions at about 100 to 300 feet above ground level. It can be flown by remote control or programmed to go to preset GPS waypoints, and is being used in the occupation of Iraq.
The Air Force describes the Predator UAV as a "medium-altitude, long-endurance, remotely piloted aircraft." It can carry two laser-guided Hellfire anti-tank missiles. It's been used on air strikes against suspected terrorists in Afghanistan and Pakistan. Cruising speed is 84 mph with an endurance of 16 to 40 hours.