JOINT BASE SAN ANTONIO-RANDOLPH, Texas –
Col. Matthew C. Isler, 12th Flying Training Wing commander, left, presents Col. Steve Burgh, 306th Flying Training Group commander, with the 306th Flying Training Group guidon during a Change of Command Ceremony July 3, 2014. Changes of command are a military tradition representing the transfer of responsibilities from the presiding officials to the upcoming official. (U.S. Air Force Photo by Elizabeth Copan)