A drone takes a practice flight in Virginia with medical supplies — part of a project to evaluate the flying machines for use in humanitarian crises.
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A British Airways plane departs London's Heathrow Airport in 2010. Earlier this month, a British Airways plane was hit by an unidentified object but landed safely at Heathrow.
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A U.S. Air Force MQ-1B Predator unmanned aerial vehicle, carrying a Hellfire missile, lands at a secret air base after flying a mission in the Persian Gulf region on Jan. 7.
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