U.S. Army Spc. Jose Hernandez, a student with 128th Aviation Brigade, 1st Battalion, 222nd Aviation Regiment, performs maintenance on a Boeing AH-64 Apache during an armament, electronic and avionics systems repair course at Fort Eustis, Va., Feb. 11, 2016. The Soldiers are taught how to first replace the unusable aircraft pieces, then how to ensure the piece is working once placed back into the aircraft. (U.S. Air Force photo by Airman 1st Class Breonna Veal)