U.S. Air Force Senior Airman Shane Penson, 52nd Maintenance Squadron field systems operator, removes wheel blocks from an F-16C Fighting Falcon at Keflavik Air Base, Iceland, July 25, 2019. F-16 Fighting Falcons and over 100 Airmen from the 480 Fighter Squadron, 52nd Fighter Wing, are in Iceland in support of NATO alliance commitments. The U.S. has been participating in this Iceland Air Surveillance mission since 2008. (U.S. Air Force photo by Airman 1st Class Jovante Johnson)