U.S. Soldiers from the 128th Aviation Brigade, 1st Battalion, 222nd Aviation Regiment, perform maintenance during an armament, electronic and avionics systems repair course at Fort Eustis, Va., Feb. 11, 2016. The course aims to teach aircraft electricians and maintainers how to replace broken or unusable aircraft parts. (U.S. Air Force photo by Airman 1st Class Breonna Veal)