美国内华达州，红旗 13-2 联合空战演习，从内利斯空军基地起飞的路易斯安那州巴克斯代尔空军基地第20轰炸机中队的 B-52H“同温层堡垒”轰炸机在演习空域飞行，其8台涡喷发动机单台推力17000磅。(A B-52H Stratofortress assigned to the 20th Bomb Squadron, Barksdale Air Force Base, La., flies during a Red Flag exercise at Nellis Air Force Base, Nev., Jan. 31, 2013. The B-52 is a long-range, strategic heavy bomber capable of dropping or launching a wide array of munitions, ranging from conventional and precision-guided bombs to cruise missiles.)

美国内华达州，红旗 13-2 联合空战演习，从内利斯空军基地起飞的路易斯安那州巴克斯代尔空军基地第20轰炸机中队的 B-52H“同温层堡垒”轰炸机在演习空域飞行，其8台涡喷发动机单台推力17000磅。(A B-52H Stratofortress assigned to the 20th Bomb Squadron, Barksdale Air Force Base, La., flies over Nevada during a Red Flag exercise at Nellis Air Force Base, Nev., Jan. 31, 2013. The B-52 was America's first long-range, swept-wing heavy bomber. Now entering its sixth decade of service, it continues to be an integral element of the Air Force bomber fleet.)

美国内华达州，红旗 13-2 联合空战演习，从内利斯空军基地起飞的路易斯安那州巴克斯代尔空军基地第20轰炸机中队的 B-52H“同温层堡垒”轰炸机在演习空域飞行，其8台涡喷发动机单台推力17000磅。(A B-52H Stratofortress assigned to the 20th Bomb Squadron, Barksdale Air Force Base, La., soars over Nevada during a Red Flag exercise at Nellis Air Force Base, Nev., Jan. 31, 2013. The B-52 was America's first long-range, swept-wing heavy bomber. Now entering its sixth decade of service, it continues to be an integral element of the Air Force bomber fleet.)

美国内华达州，红旗 13-2 联合空战演习，从内利斯空军基地起飞的路易斯安那州巴克斯代尔空军基地第20轰炸机中队的 B-52H“同温层堡垒”轰炸机在演习空域转弯，其8台涡喷发动机单台推力17000磅。(A B-52H Stratofortress assigned to the 20th Bomb Squadron, Barksdale Air Force Base, La., flies during a Red Flag exercise at Nellis Air Force Base, Nev., Jan. 31, 2013. The B-52 has eight turbojet engines, each capable of producing 17,000 pounds of thrust, with a top speed of 650 miles per hour. Now entering its sixth decade of service, it continues to be an integral element of the Air Force bomber fleet.)

美国内华达州，红旗 13-2 联合空战演习，从内利斯空军基地起飞的路易斯安那州巴克斯代尔空军基地第20轰炸机中队的 B-52H“同温层堡垒”轰炸机在演习空域飞行。其8台涡喷发动机单台推力17000磅。(A B-52H Stratofortress assigned to the 20th Bomb Squadron, Barksdale Air Force Base, La., flies during a Red Flag exercise at Nellis Air Force Base, Nev., Jan. 31, 2013. The B-52 has eight turbojet engines, each capable of producing 17,000 pounds of thrust, with a top speed of 650 miles per hour. Now entering its sixth decade of service, it continues to be an integral element of the Air Force bomber fleet.)

美国内华达州内利斯空军基地，红旗 13-2 联合空战演习，路易斯安那州巴克斯代尔空军基地的 B-52H“同温层堡垒”轰炸机在进行维护，第2飞机维修中队的约翰·迈尔地正推动轮胎牵引杆。(Senior Airman John Myer, 2nd Aircraft Maintenance Squadron, B-52 aircraft maintainer, Barksdale Air Force Base, La., pushes a tow bar under a B-52H Stratofortress tire during a Red Flag exercise, Nellis Air Force Base, Nev., Jan. 2013. The B-52 shredded a tire upon landing after a four-hour mission.)

美国内华达州内利斯空军基地，红旗 13-2 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”轰炸机正在启动引擎。(Airmen from the 20th Aircraft Maintenance Unit prepare to launch a B-52H Stratofortress, Jan. 31, 2013 at Nellis Air Force Base, Nev. The Barksdale Air Force Base, La., team is at Nellis to participate in Red Flag, a two-week, multinational advanced aerial combat training exercise.)

美国内华达州内利斯空军基地，红旗 13-2 联合空战演习，来自路易斯安那州巴克斯代尔空军基地第20轰炸机中队的 B-52H“同温层堡垒”轰炸机起飞执行演习任务。(A B-52 Stratofortress assigned to 20th Bomb Squadron, Barksdale Air Force Base, La., takes off during a Red Flag exercise at Nellis Air Force Base, Nev., Jan. 30, 2013. The B-52 is a long-range, strategic heavy bomber capable of dropping or launching a wide array of munitions, which has been part of the U.S. arsenal for more than 60 years.)

美国内华达州内利斯空军基地，红旗 13-2 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”轰炸机对准跑道准备降落。(A B-52 Stratofortress from Barksdale Air Force Base, La., banks towards the Nellis flight line for a landing during Red Flag 13-2 Jan. 24, 2013. The Red Flag exercise provides allied air forces the opportunity to train air-to-air combat operations on the Nevada Test and Training Range north of Las Vegas.)

美国内华达州内利斯空军基地，红旗 13-2 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”轰炸机着陆后释放阻力伞。(A B-52 Stratofortress from Barksdale Air Force Base, La., deploys its parachute as it lands at Nellis Air Force Base, Nev., during Red Flag 13-2 Jan. 24, 2013. Red Flag is a realistic combat training exercise involving the air forces of the United States and its allies.)