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。（A B-1B Lancer assigned to the 37th Bomb Squadron, Ellsworth Air Force Base, S.D., flies during Red Flag 15-2 sortie at Nellis AFB, Nev., March 10, 2015. The B-1 can rapidly deliver massive quantities of precision and non-precision weapons against any adversary, anywhere in the world, at any time.）

红旗 15-2 联合空战演习中，美国空军第37轰炸机中队（37BS）二架 B-1B 轰炸机在内利斯空军基地滑行。（Two B-1B Lancers assigned to the 37th Bomb Squadron, Ellsworth Air Force Base, S.D., taxi during Red Flag 15-2 at Nellis AFB, Nev., March 10, 2015. Red Flag provides a series of intense air-to-air scenarios for aircrew and ground personnel to increase their combat readiness and effectiveness for future real-world operations.）

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.）

红旗 15-2 联合空战演习中，美国空军第23轰炸机中队（23BS）一架 B-52H 轰炸机从内利斯空军基地起飞执演。（A B-52H Stratofortress assigned to the 23rd Bomb Squadron, Minot Air Force Base, N.D., takes off during Red Flag 15-2 from Nellis Air Force Base, Nev., March 3, 2015. Red Flag is a realistic combat training exercise involving the air forces of the U.S. and its allies.）

红旗 15-2 联合空战演习中，美国空军第23轰炸机中队（23BS）一架 B-52H 轰炸机返回内利斯空军基地。（A B-52 Stratofortress assigned to the 23rd Bomb Squadron, Minot Air Force Base, N.D., lands after a Red Flag 15-2 sortie at Nellis AFB, Nev., March 11, 2015. Red Flag involves a variety of attack, fighter, bomber, reconnaissance, electronic warfare, airlift support and search and rescue aircraft.）

红旗 15-3 联合空战演习中，美国空军第69轰炸机中队（69BS）一架 B-52H 轰炸机返回内利斯空军基地。（A B-52 Stratofortress assigned to the 69th Bomb Squadron, Minot Air Force Base, N.D. lands during Red Flag 15-3 at Nellis Air Force Base, Nev., July 21, 2015. The B-52 is a long-range, heavy bomber that is capable of flying at high subsonic speeds, at altitudes up to 50,000 feet, and can carry up to 70,000 pounds of weapons including nuclear or guided conventional ordnance with worldwide precision navigation capability.）

红旗 15-3 联合空战演习中，美国空军第69轰炸机中队（69BS）一架 B-52H 轰炸机从内利斯空军基地起飞。（A B-52 Stratofortress assigned to the 69th Bomb Squadron, Minot Air Force Base, N.D., takes off during Red Flag 15-3 at Nellis Air Force Base, Nev., July 21, 2015. The exercise takes place over the 12,000-square-nautical mile Nevada Test and Training Range which provides a realistic arena for operational testing and training aircrews to improve combat readiness.）

红旗 15-3 联合空战演习中，美国空军第122战斗机中队（122FS）一架 F-15C 战斗机在内华达试验和训练靶场上空跟随 KC-135 加油机倾斜飞行。（An F-15C assigned to the 122nd Fighter Squadron, Louisiana Air National Guard, banks after refueling from a KC-135 Stratotanker during a Red Flag 15-3 training mission over the Nevada Test and Training Range, July 24, 2015. Different units from across the Department of Defense and allied nations come to Red Flag to train in intense air-to-air combat scenarios which will prepare them for future real-world operations.）

红旗 15-3 联合空战演习中，美国空军第325战斗机中队（佛罗里达州廷德尔空军基地，325FS）一架 F-22A 战斗机在内华达试验和训练靶场上空加油完毕，正在脱离 KC-135 加油机。（An F-22 Raptor from the 325th Fighter Squadron, Tyndall Air Force Base, Fla., banks and departs after refueling off the tail of a KC-135 Stratotanker assigned to the 344th Air Refueling Squadron, McConnell Air Force Base, Kan., during a Red Flag 15-3 training sortie over the Nevada Test and Training Range, July 24, 2015. This year marks the 40th anniversary of the Red Flag exercise, during which units from around the U.S. and allied militaries integrate capabilities fighting through complex air, space, and cyber warfare training scenarios.）

红旗 15-3 联合空战演习中，美国空军第95战斗机中队（佛罗里达州廷德尔空军基地，95FS）二架 F-22A 战斗机在内华达试验和训练靶场上空编队飞行，等待另一架 F-22A 完成空中加油。（Two F-22 Raptors assigned to the 95th Fighter Squadron, Tyndall Air Force Base, Fla., fly in formation as they wait on a fellow wingman to finish refueling from a KC-135 Stratotanker assigned to the 22nd Air Refueling Wing, McConnell Air Force Base, Kan., during a Red Flag 15-3 training mission over the Nevada Test and Training Range, July 24, 2015. KC-135s are responsible for refueling all aircraft during Red Flag with approximately 20 units participating in 15-3.）