Staff Sgt. Jeremie Key and Jake Smith, both weapons loaders with the 131st Maintenance Group, usher one of 15 conventional bombs to the B-2 Spirit aircraft during the October 2014 Global Strike Challenge at Whiteman Air Force Base, Missouri. Key, Smith and other participants were evaluated on their functional area understanding through knowledge tests, but then had to display that knowledge during the evaluation the following day. (U.S. Air National Guard photo by Senior Airman Nathan Dampf/RELEASED)