Vipers on the combat frontier
A U.S. Air Force F-16 Fighting Falcon aircraft assigned to the 555th Expeditionary Fighter Squadron takes off on a combat sortie from Bagram Airfield, Afghanistan, Sept. 6, 2015. The F-16 is a multi-role fighter aircraft that is highly maneuverable and has proven itself in air-to-air and air-to-ground combat. (U.S. Air Force photo by Tech. Sgt. Joseph Swafford/Released)