美国内华达州内利斯空军基地，红旗 2012 联合空战演习，路易斯安那州巴克斯代尔空军基地第96轰炸机中队的 B-52H“同温层堡垒”轰炸机在降落。(A B-52H Stratofortress takes flight during a Red Flag exercise July 17 at Nellis Air Force Base, Nev. Red Flag provides an opportunity for Air Force Global Strike Command units to demonstrate their ability to deploy long-range strike forces and deliver precision effects that strengthen the nuclear enterprise.)

美国内华达州内利斯空军基地，红旗 2012 联合空战演习，路易斯安那州巴克斯代尔空军基地第2轰炸机联队的 B-52H“同温层堡垒”轰炸机在停机坪。(A B-52H Stratofortress from the 2nd Bomb Wing, Barksdale Air Force Base, La., is parked on the ramp during Exercise Red Flag, March 3, 2012. Exercise Red Flag trains pilots from the U.S., NATO and other allied countries for realistic combat scenarios. The B-52 performs a dual-role mission, nuclear and conventional, providing a rapid global strike capability and ability to reach hardened and buried targets anywhere and at anytime.)

美国内华达州内利斯空军基地，红旗 2011 联合空战演习，路易斯安那州巴克斯代尔空军基地第96轰炸机中队的 B-52H“同温层堡垒”轰炸机出动。(A B-52H Stratofortress from the 96th Bomb Squadron, Barksdale Air Force Base, La., flies a sortie Feb. 1 during Exercise Red Flag at Nellis AFB, Nev. The purpose of Exercise Red Flag is to train pilots from the U.S., NATO and other allied countries for realistic combat scenarios. This includes the use of live ammunition for bombing exercises within the Nevada Test and Training Range.)

美国内华达州内利斯空军基地，红旗 11-2 联合空战演习，路易斯安那州巴克斯代尔空军基地第96轰炸机中队的 B-52H“同温层堡垒”轰炸机正在起飞。(A U.S. Air Force B-52 Stratofortress aircraft assigned to the 96th Bomber Squadron, Barksdale Air Force Base, La., takes off from Nellis Air Force Base, Nev., Feb. 3, 2011, during Red Flag 11-2. Red Flag is a combat training exercise involving the air forces of the United States and its allies.)

美国内华达州内利斯空军基地，红旗 11-2 联合空战演习，路易斯安那州巴克斯代尔空军基地第96轰炸机中队的 B-52H“同温层堡垒”轰炸机正在起飞。(A U.S. Air Force B-52 Stratofortress aircraft assigned to the 96th Bomber Squadron, Barksdale Air Force Base, La., takes off from Nellis Air Force Base, Nev., Feb. 3, 2011, during Red Flag 11-2. Red Flag is a combat training exercise involving the air forces of the United States and its allies.)

美国内华达州内利斯空军基地，红旗 11-2 联合空战演习，路易斯安那州巴克斯代尔空军基地第96轰炸机中队的 B-52H“同温层堡垒”轰炸机升空后收起落架。(NELLIS AIR FORCE BASE, Nev. -- A U.S. Air Force B-52 Stratofortress from the 96th Bomb Squadron, Barksdale Air Force Base, La., takes off from Nellis Air Force Base, Nev. during a training mission at Red Flag 11-2 Feb. 3, 2011. Red Flag is a realistic combat training exercise involving the air forces of the United States and its allies.)

美国内华达州内利斯空军基地，红旗 09-5 联合空战演习，路易斯安那州巴克斯代尔空军基地第2轰炸机联队的 B-52H“同温层堡垒”轰炸机起飞执训。(A B-52H Stratofortress aircraft from the 2nd Bomb Wing out of Barksdale Air Force Base, La., takes off from Nellis Air Force Base, Nev., Aug. 26, 2009, on a training mission during Red Flag 09-5. Red Flag is a realistic air combat training exercise conducted over the 15,000-square-mile Nevada Test and Training Range north of Las Vegas.)

美国内华达州内利斯空军基地，红旗 09-5 联合空战演习，来自路易斯安那州巴克斯代尔空军基地的 B-52H“同温层堡垒”轰炸机着陆后释放阻力伞。(NELLIS AIR FORCE BASE, Nev. -- A B-52 from Barksdale Air Force Base, La., arrives here Aug. 21 to participate in Red Flag 09-5, an intense two-week combat scenario exercise. Red Flag is conducted on the 15,000-square-mile Nevada Test and Training Range, north of Las Vegas. The exercise is one of a series of advanced training programs administered by the U.S. Air Force Warfare Center and Nellis, through the 414th Combat Training Squadron.)

美国内华达州内利斯空军基地，红旗 2005 联合空战演习，美国空军 B-52H“同温层堡垒”轰炸机和 E-3C 预警机在跑道上滑行。(A U.S. Air Force B-52H Stratofortress aircraft (foreground) and an E-3C Sentry aircraft taxi down the runway for a Red Flag mission at Nellis Air Force Base, Nev., on Aug. 31, 2005. Red Flag is a multi-national live-fire exercise designed to replicate the first 10 days of war, giving pilots real-world experience to increase their ability to survive in combat.)

美国内华达州内利斯空军基地，红旗 2005 联合空战演习中，密苏里州怀特曼空军基地第509轰炸机联队第325轰炸机中队“华盛顿幽灵”B-2A 轰炸机加注燃料。(A U.S. Air Force fuel truck assigned to the 99th Logistics Readiness Squadron, provides fuel for a B-2 Spirit stealth bomber, assigned to the 509th Bomb Wing, from Whiteman Air Force Base, Mo., on March 1, 2005. The aircraft is participating in a Red Flag exercise at Nellis Air Force Base, Nev.)