A B-1 bomber assigned to the 37th Bomb Squadron launches for exercise Combat Raider March 15, 2017, at Ellsworth Air Force Base, S.D. The B-1 was first stationed at Ellsworth in 1987 and has been involved in every Large Scale Exercise at the Powder River Training Complex, north of Belle Fourche, S.D. (U.S. Air Force photo by Airman Nicolas Z. Erwin)