U.S. Air Force Col. Athanasia Shinas, 624th Regional Support Group commander, returns a salute from Col. Edward Johnson, 624th Aeromedical Staging Squadron incoming commander, as he takes command during the 624th ASTS change of command ceremony in front of the 15th Medical Group building at Joint Base Pearl Harbor-Hickam, Hawaii, Aug. 8, 2020. Due to the ongoing pandemic the 624th ASTS guidon was posted and salutes took place instead of the traditional guidon exchange. (U.S. Air Force photo by Tech. Sgt. Amber E. N. Kurka)