U.S. Air Force Col. Angelina Maguinness, 17th Training Group commander, takes the guidon from Lt. Col. Christopher Sharp, outgoing 316th Training Squadron commander, during the change of command ceremony at the Base Theater on Goodfellow Air Force Base, Texas, June 18, 2021. Sharp is retiring from the Air Force after 27 years of active duty. (U.S. Air Force photo by 2nd Lt. Steve Garrett)