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A bird flies near a plane performing aerobatics during an air show celebrating the 70th birthday of U.S. Air Force at Joint Base Andrews outside Washington D.C. in Maryland, the United States, Sept. 16, 2017. (Xinhua/Yin Bogu)
A bird flies near a plane performing aerobatics during an air show celebrating the 70th birthday of U.S. Air Force at Joint Base Andrews outside Washington D.C. in Maryland, the United States, Sept. 16, 2017. (Xinhua/Yin Bogu)