RAF Mildenhall Airmen exchange a KC-135 engine
U.S. Air Force Staff Sgt. David Manning, 100th Maintenance Squadron aerospace propulsion mechanic from Poultney, Vt., ensures the engine swap on a KC-135 Stratotanker goes smoothly Jan. 22, 2015, on RAF Mildenhall, England. Exchanging a damaged engine with an operational one on a KC-135 typically takes 48 hours to complete. (U.S. Air Force photo by Senior Airman Victoria H. Taylor/Released)