Staff Sgt. Josiah Thatcher, 28th Munitions Squadron munitions support bay chief, prepares to attach a hoist to transfer munitions during the Global Strike Challenge on Ellsworth Air Force Base S.D., Aug. 20, 2015. The competition is designed to improve combat capabilities through preparation, innovation, competition and teamwork. (U.S. Air Force photo by Airman 1st Class James L. Miller/Released)