A U.S. Air Force F-15C Eagle assigned to the 493rd Fighter Squadron takes off from the flight line during Agile Combat Employment exercise Castle Forge at Royal Air Force Mildenhall, United Kingdom, Nov. 3, 2021. The exercise enables U.S. 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. (U.S. Air Force photo by Senior Airman Koby I. Saunders)