A U.S. Airman assigned to the 67th Aircraft Maintenance Unit, Kadena Air Base, Japan, launches an F-15 Eagle at Allen Army Airfield during an Agile Combat Employment (ACE) scenario for Red Flag-Alaska 19-3 at Fort Greely, Alaska, Aug. 8, 2019. ACE is the use of minimal manpower and equipment to complete maintenance operations in remote and austere environments . (U.S. Air Force photo by Senior Airman Isaac Johnson)