180809-F-XW046-0021
A U.S. Air Force Airman from the 100th Air Refueling Wing reviews a preflight checklist for a KC-135 Stratotanker prior to a flight to Keflavik Air Base, Iceland, at RAF Mildenhall, England, Aug. 10, 2018. U.S. Air Force Airmen and F-15C/D Eagles from the 48th Fighter Wing, RAF Lakenheath, England, deployed to Keflavik Air Base, Iceland, to conduct an air surveillance mission in support of NATO alliance commitments. (U.S. Air Force photo by Airman 1st Class Alexandria Lee)