U.S. Air Force Airman 1st Class Jacob Dovel, right, and Staff Sgt. Daniel Kealy, 23rd Aircraft Maintenance Squadron crew chiefs, review pre-flight checks during Exercise Dragon Strike June 11, 2015, at Avon Park Air Force Range, Fla. Dovel and Kealy conducted pre-flight checks and marshaled A-10C Thunderbolt IIs for takeoff for a close air support mission with joint terminal attack controllers. (U.S. Air Force photo by Airman 1st Class Dillian Bamman/Released)