A B-1 bomber assigned to the 37th Bomb Squadron at Ellsworth Air Force Base, S.D. prepares to fly out to participate in exercise Red Flag 17-1 at Nellis AFB, Nevada, Jan. 20, 2016. Nearly 200 Airmen and five jets assigned to Ellsworth participated in the three-week exercise. (U.S. Air Force photo by Airman 1st Class Donald Knechtel)