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美国阿拉斯加州艾尔森空军基地，红旗-阿拉斯加 10-2 联合空战演习中，一架 B-52H 轰炸机起飞飞越一架美国海军陆战队的 KC-130T 加油机。(A U.S. Air Force B-52H Stratofortress aircraft prepares to take off from Eielson Air Force Base, Alaska, during Red Flag-Alaska 10-2 April 19, 2010. The exercise provides participants with 67,000 square miles of airspace, more than 30 threat simulators, one conventional bombing range and two tactical bombing ranges containing more than 400 types of targets. The aircraft is assigned to Barksdale AFB, La.)