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美国内华达州内利斯空军基地，红旗 14-3 联合空战演习中，美国空军第4战斗机联队（北卡罗来纳州西摩约翰逊空军基地，4FW）一架 F-15E 战斗轰炸机正在起飞。（An F-15E Strike Eagle assigned to the 4th Fighter Wing, Seymour Johnson Air Force Base, N.C., takes off during Red Flag 14-3 at Nellis Air Force Base, Nev., July 15, 2014. Red Flag is a realistic combat training exercise involving the air, space and cyber forces of the U.S. and its allies, and is conducted on the vast bombing and gunnery ranges of the Nevada Test and Training Range.）

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