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美国南达科他州埃尔斯沃思空军基地，美国空军 B-1B 轰炸机启程前往内华达州内利斯空军基地参加“红旗”军演，此次共有6架 B-1B 轰炸机参加“红旗”演习。(A B-1B takes off from Ellsworth Air Force Base, S.D., Jan. 20, 2012. Approximately 90 airmen along with six B-1Bs departed for Nellis AFB, Nev. to participate in Red Flag, a combat exercise that train aircrews through realistic combat scenarios.)