MAYPORT, Fla. (Aug 12, 2016) – Rear Adm. Sean Buck, commander, U.S. Naval Forces Southern Command/U.S. 4th Fleet, left, requests to assume command by Commander, U.S. Southern Command Adm. Kurt Tidd during the U.S. Naval Forces Southern Command/U.S. 4th Fleet change of command ceremony held at U.S. Naval Station Mayport. (U.S. Navy photo by Mass Communication Specialist 2nd Class Michael Hendricks/Released)