U.S. Air Force Senior Airman Chase Wood, 7th Munitions Squadron munitions controller, installs a hardback to an inert GBU-31 V3 joint direct attack munition as part of a bomb build competition April 29, 2016, at Dyess Air Force Base, Texas. As part of the competition, teams completed a build of six inert guided bomb units. (U.S. Air Force photo by Airman 1st Class Rebecca Van Syoc/Released)