A loaded B-1 bomber takes off during the final phase of the Global Strike Challenge at Ellsworth Air Force Base, S.D., Oct. 1, 2012. Global Strike Challenge is the world's premier competition for bomber crews, Intercontinental Ballistic Missile crews and security forces, and includes units from Air Combat Command, Air Force Global Strike Command, Air Force Reserve Command and the Air National Guard. (U.S. Air Force photo by Airman 1st Class Zachary Hada/Released)