U.S. Air Force Senior Airman Darryon Rivera, 494th Aircraft Maintenance Unit crew chief, checks the fluid levels in an F-15E Strike Eagle at Royal Air Force Lakenheath, England, Aug. 7, 2020. 48th AMXS Airmen ensure Liberty Wing F-15s are fit to fly and can continue to provide superior airpower capabilities when called upon. (U.S. Air Force photo by Airman 1st Class Jessi Monte)