U.S Air Force Airman 1st Class Garrett Peirce refuels a U.S. Air Force F-16 Fighting Falcon over Afghanistan, Dec. 29, 2015. Peirce is a boom operator assigned to the 340th Expeditionary Air Refueling Squadron, deployed from the 92nd Air Refueling Wing at Fairchild Air Force Base, Wash. U.S. Air Force photo by Staff Sgt. Corey Hook