An Airman assigned to the 20th Equipment Maintenance Squadron armament maintenance flight applies lubricant to an M61A1 Vulcan 20 mm rotary cannon part at Shaw Air Force Base, S.C., Aug. 2, 2018. The lubrication prevents corrosion and allows for smooth operation while the Vulcan is firing. (U.S. Air Force photo by Senior Airman Christopher Maldonado)