U.S. Air Force Airmen Zachary Koenig, 22nd Expeditionary Aircraft Maintenance Unit KC-135 Stratotanker jet engine mechanic, takes apart a KC-135 engine at Incirlik Air Base, Turkey, Nov. 15, 2018. The KC-135 maintainers perform systematic and consistent procedures to ensure their aircraft are ready to provide in-flight refueling capabilities to U.S. and Coalition aircraft. (U.S. Air Force photo by Staff Sgt. Brittany E. N. Murphy)