U.S. Air Force Col. Michael Grunwald Jr., 17th Training Group Commander, passes the 17th Training Support Squadron guidon to Lt. Col. Abraham Salomon during the change of command ceremony at the Event Center on Goodfellow Air Force Base, Texas, July 6, 2016. The guidon passing symbolizes the changing of command to the new commander. (U.S. Air Force photo by Airman 1st Class Chase Sousa/Released)