A B-1B Lancer takes off during Green Flag 14-6 April 24, 2014, at Nellis Air Force Base, Nev. The B-1B Lancer is a four-engine supersonic variable sweep wing, jet-powered strategic bomber. The B-1B is assigned to the 7th Bomb Wing, Dyess Air Force Base, Texas. (U.S. Air Force photo/Senior Airman Christopher Tam)
