U.S. Air Force Tech. Sgt. Scott Nagel refuels an F-18 from the Royal Canadian air force in support of Operation Inherent Resolve over Southwest Asia, Dec. 4, 2015. Nagel is a boom operator assigned to the 340th Expeditionary Air Refueling Squadron, is deployed from the 171st Air Refueling Wing in Pennsylvania. U.S. Air Force photo by Tech. Sgt. Nathan Lipscomb