A 363rd Training Squadron armament apprentice course student inspects training bombs while his wingmen set up the bomb rack at Sheppard Air Force Base, Texas, Feb. 5, 2019. Different bombs require the bomb rack to be set up differently. Bomb racks are also equipped with little valves to ensure the bombs will tip forward when dropped to make sure they do not fly back into the aircraft. (U.S. Air Force photo by Airman 1st Class Pedro Tenorio)