Air Force Technical Sgt. John Hall, left, and Senior Airman David O'grady refuel an F-16 Fighting Falcon aircraft before a flight mission at Papa Air Base, Papa, Hungary, July 20, 2016. Hall is a crew chief and O’grady is a fuel operator assigned to the Colorado Air National Guard’s 140th Wing, deployed from Buckley Air Force Base, Colorado. Air National Guard photo by Senior Master Sgt. John Rohrer