U.S. Air Force Staff Sgt. Justin Ziegler and Airman 1st Class Richard Gonzales, 22nd Expeditionary Aircraft Maintenance Unit KC-135 Stratotanker crew chiefs, clean a boom sighting window at Incirlik Air Base, Turkey, Nov. 15, 2018. The deployed Airmen assigned to the 22nd Expeditionary Air Refueling Squadron and the 22nd EAMU maintain and operate the KC-135 in support of Operation Inherent Resolve. (U.S. Air Force photo by Staff Sgt. Brittany E. N. Murphy)