U.S. Air Force Staff Sgt. Miguel Talamantes, 492nd Aircraft Maintenance Unit crew chief, performs routine pre-flight checks on an F-15E Strike Eagle during Agile Combat Employment training at Royal Air Force Lakenheath, England, Jan. 12, 2021. Exercising elements of ACE enables U.S. Air Forces in Europe to operate from locations with varying levels of capacity and support, ensuring Airmen and aircrews are postured to deliver lethal combat power across the spectrum of military operations. (U.S. Air Force photo by Airman 1st Class Jessi Monte)