U.S. Air Force Col. Thomas Coakley, 17th Training Group commander, passes the 313th Training Squadron guidon to Lt. Col. Herbert Millet III during a change-of-command ceremony at the event center on Goodfellow Air Force Base, Texas, May 10, 2019. Millet assumed command of the 313th Training Squadron from Lt. Col. David Sarabia during the change of command ceremony. (U.S. Air Force photo by Airman 1st Class Robyn Hunsinger/released)