Thracian Star 21; Bulgarian and U.S. Air Force strengthen interoperability
A joint terminal attack controller (JTAC) assigned to Detachment 1, 4th Combat Training Squadron, Ramstein Air Base, Germany, directs the action of U.S. Air Force F-16 Fighting Falcon aircraft assigned to the 555th Fighter Squadron at the Graf Ignatievo range, Bulgaria, July 14, 2021. A JTAC is a qualified service member who directs the action of combat aircraft engaged in close air support and other offensive air operations from a forward position. (U.S. Air Force photo by Airman 1st Class Brooke Moeder)