U.S. Air Force Airman 1st Class Randal Trosky, 1st Maintenance Squadron, and Tech. Sgt. Kenneth Stanley, 192nd MXS, ordnance maintenance mechanics, train together while building eight Mark 83 inert bombs for an exercise commemorating Maj. Gen. Billy Mitchell’s bombing of the German battleship Ostfriesland, at Langley Air Force Base, Va., July 10, 2016. Mitchell, often referred to as the ‘Father of the Air Force’, sunk the ship to prove a case for the power of an independent air service. (U.S. Air National Guard photo by Master Sgt. Carlos J. Claudio)