U.S. Air Force Staff Sgt. Kelvin Castillo, a squadron lead crew team chief assigned to the 1st Maintenance Group, discusses weapon specifics and theory of operations for the GBU-32 small diameter bomb with Staff Sgt. Daniel Schriever, a weapons load crew team chief assigned to the 94th Aircraft Maintenance Unit, at Langley Air Force Base, Va., March 23, 2016. The weapons crew training program is evaluated often to ensure its execution during daily flying operations. (U.S. Air Force photo by Senior Airman Brittany E. N. Murphy)