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红旗 15-2 联合空战演习中，美国空军第37轰炸机中队（37BS）一架 B-1B 轰炸机从内利斯空军基地起飞执演。（A B-1B Lancer assigned to the 37th Bomb Squadron, Ellsworth Air Force Base, S.D., takes off during Red Flag 15-2 from Nellis Air Force Base, Nev., March 3, 2015. The U.S. Air Force’s premier exercise provides aircrews and ground crews the opportunity to experience realistic, stressful combat situations in a controlled environment to increase their combat readiness and effectiveness.）

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