OSAN AIR BASE, Republic of Korea --   Chief Master Sgt. Jeremiah Ross (left), outgoing Seventh Air Force command chief, and Chief Master Sgt. Thomas Schaefer (right), incoming command chief, attend a Change of Responsibility ceremony at Osan Air Base, Republic of Korea, July 17, 2025. Schaefer previously served as the Command Chief Master Sergeant of the 57th Wing, Nellis Air Force Base, Nevada, and prior to that, as the Command Chief of the 8th Fighter Wing at Kunsan Air Base, Republic of Korea. (U.S. Air Force photo by Staff Sgt. Dustin Braaten)