RED FLAG 13-2
An Airman from the Republic of Singapore Air Force assigned to the 425th Fighter Squadron, Luke Air Force Base, Ariz., salutes an F-16 Fighting Falcon pilot as he taxis toward the runway during RED FLAG 13-2 Jan. 21, 2013, at Nellis Air Force Base, Nev. Each Red Flag exercise normally involves a variety of interdiction, attack, air superiority, defense suppression, airlift, air refueling and reconnaissance aircraft. (U.S. Air Force photo by Staff Sgt. William P. Coleman)