红旗 11-2 联合空战演习中，阿联酋空军一架 F-16E 战斗机从内华达州内利斯空军基地起飞执演。(NELLIS AIR FORCE BASE, Nev. -- An F-16 Fighting Falcon from United Arab Emirates air force takes off from the flightline during the first day of Red Flag 11-2 Jan. 24. Red Flag is a combined exercise that provides a realistic combat training environment to the U.S. and its allies.)

美国内华达州内利斯空军基地，红旗 11-3 联合空战演习中，美国空军第20战斗机联队（南卡罗来州肖空军基地，20FW）一架 F-16CM 战斗机在内华达试验和训练靶场上空加油。(A U.S. Air Force F-16 Fighting Falcon, 20th Fighter Wing, Shaw Air Force Base, S.C., pulls up for air refueling over the Nevada Test and Training Range during Red Flag 11-3, March 2. Red Flag is a realistic combat training exercise involving the air forces of the United States and its allies. The exercise is hosted north of Las Vegas on the Nevada Test and Training Range.)

美国内华达州内利斯空军基地，红旗 11-3 联合空战演习中，美国空军第20战斗机联队（南卡罗来州肖空军基地，20FW）三架 F-16CM 战斗机编队通场。(U.S. Air Force F-16 Fighting Falcon aircraft assigned to the 20th Fighter Wing, Shaw Air Force Base (AFB), S.C., return from a training mission over the Nevada Test and Training Range during Red Flag 11-3 at Nellis AFB, Nev., March 10, 2011. Red Flag is an advanced aerial combat training exercise held four to six times a year to train pilots from the U.S., NATO and other allied countries for real combat situations.)

美国内华达州内利斯空军基地，红旗 11-3 联合空战演习中，美国空军第20战斗机联队（南卡罗来州肖空军基地，20FW）一架 F-16CM 战斗机返场。(NELLIS AIR FORCE BASE, Nev., -- F-16 Fighting Falcon, 20th Fighter Wing, Shaw Air Force Base, S.C., takes off from Nellis Air Force Base, Nev., for a training mission over the Nevada Test and Training Range during Red Flag 11-3 March 10. 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 11-3 联合空战演习中，美国空军第20战斗机联队（南卡罗来州肖空军基地，20FW）一架 F-16CM 战斗机返场。(NELLIS AIR FORCE BASE, Nev., -- F-16 Fighting Falcon, 20th Fighter Wing, Shaw Air Force Base, S.C., takes off from Nellis Air Force Base, Nev., for a training mission over the Nevada Test and Training Range during Red Flag 11-3 March 10. 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 11-3 联合空战演习中，美国空军第20战斗机联队（南卡罗来州肖空军基地，20FW）一架 F-16CJ 战斗机正在起飞。(NELLIS AIR FORCE BASE, Nev., -- F-16 Fighting Falcon, 20th Fighter Wing, Shaw Air Force Base, S.C., takes off from Nellis Air Force Base, Nev., for a training mission over the Nevada Test and Training Range during Red Flag 11-3 March 10. 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 11-3 联合空战演习中，美国空军第20战斗机联队（南卡罗来州肖空军基地，20FW）一架 F-16CM 战斗机正在起飞。(A U.S. Air Force F-16 Fighting Falcon aircraft assigned to the 20th Fighter Wing takes off for a training mission over the Nevada Test and Training Range during Red Flag 11-3 at Nellis Air Force Base, Nev., March 10, 2011. Red Flag is an advanced aerial combat training exercise held four to six times a year to train pilots from the U.S., NATO and other allied countries for real combat situations.)

美国内华达州内利斯空军基地，红旗 11-3 联合空战演习中，美国空军第20战斗机联队（南卡罗来州肖空军基地，20FW）一架 F-16CJ 战斗机正在起飞。(A U.S. Air Force F-16 Fighting Falcon, 20th Fighter Wing, Shaw Air Force Base, S.C., returns from a training mission over the Nevada Test and Training Range during Red Flag 11-3 at Nellis Air Force Base, Nev., March 10. Red Flag is a realistic combat training exercise involving the air forces of the United States and its allies. The exercise is hosted north of Las Vegas on the Nevada Test and Training Range.)

美国内华达州内利斯空军基地，红旗 11-3 联合空战演习中，美国空军第20战斗机联队（南卡罗来州肖空军基地，20FW）一架 F-16CM 战斗机正在起飞。(A U.S. Air Force F-16 Fighting Falcon aircraft assigned to the 20th Fighter Wing, Shaw Air Force Base (AFB), S.C., takes off for a training mission over the Nevada Test and Training Range during Red Flag 11-3 at Nellis AFB, Nev., March 10, 2011. Red Flag is an advanced aerial combat training exercise held four to six times a year to train pilots from the U.S., NATO and other allied countries for real combat situations.)

美国内华达州内利斯空军基地，红旗 11-2 联合空战演习中，美国空军第480战斗机中队（德国斯潘达勒姆空军基地，480FS）一架 F-16CM 战斗机正在起飞。(A U.S. Air Force F-16 Fighting Falcon with the 480th Fighter Squadron, Spangdahlem Air Base, Germany, takes off from Nellis Air Force Base, Nev., Feb. 3, 2011, during Red Flag 11-2. Red Flag is a realistic combat training exercise involving the air forces of the United States and its allies.)