Senior Airman Brian Decker, 28th Aircraft Maintenance Squadron crew chief, describes the engine capabilities of the B-1B Lancer to Aric Lassegard, 34th Bomb Squadron honorary aircrew, at Ellsworth Air Force Base, S.D., Jan. 13, 2011. Each of the four engines on the B-1 is capable of producing 30,000 pounds of thrust. (U.S. Air Force photo/Staff Sgt. Marc I. Lane)