U.S. Air Force Staff Sgt. Mark Mitchell, 100th Operations Support Squadron NCO in-charge of Survival, Evasion, Resistance, Escape operations, explains the rules of engagement to the opposing force volunteers prior to the start of training near Royal Air Force Mildenhall, England, Sept. 2, 2020. The OPFOR volunteers searched the area for the aircrew, giving evading aircrew the opportunity to practice their survival techniques. (U.S. Air Force photo by Senior Airman Benjamin Cooper)