Three F-16 Fighting Falcon from the 121st Fighter Squadron, District of Columbia Air National Guard, and a KC-135 Stratotanker from the 459th Air Refueling Wing, Air Force Reserves, display aerial refueling maneuvers during an ESGR (Employee Support of Guard and Reserve) Boss-Lift event. The Bosslift program allows employers the opportunity to experience firsthand what their service-member employees experience when on deployment and/or serving at home. (U.S. Air Force photo by Tsgt Gareth Buckland) Released.