39th Maintenance Squadron holds change of command ceremony Published June 23, 2025 By Staff Sgt. Koby Saunders 39th Air Base Wing Public Affairs INCIRLIK AIR BASE, Türkiye -- U.S. Air Force Col. John Jansheski, left, 39th Weapons System Security Group commander, gives a unit guidon to Lt. Col. Spencer Shibler, incoming 39th Maintenance Squadron commander, during a change of command ceremony at Incirlik Air Base, Türkiye, June 18, 2025. The change of command ceremony is a long-standing military tradition that represents the formal transfer of responsibility from one officer to another. (U.S. Air Force photo by Staff Sgt. Koby I. Saunders)