ELLSWORTH AIR FORCE BASE S.D. - Senior Airman Tavares Battle, 28th Aircraft Maintenance Squadron load crew member, uses a power control unit to raise the conventional rotary launcher on a munitions handling unit during the Global Strike Challenge, June 9. The Global Strike Challenge evaluated 28th Bomb Wing competing members on their skills and knowledge of their work. (U.S. Air Force photo/Airman 1st Class Corey Hook)