190614-N-VY375-1323 SAN DIEGO (June 14, 2019) Vice Adm. John D. Alexander, commander of U.S. Third Fleet, delivers remarks during the change of command ceremony for Carrier Strike Group Nine (CSG 9) on the flight deck of the aircraft carrier USS Theodore Roosevelt (CVN 71). Rear Adm. Stuart P. Baker relieved Rear Adm. Daniel W. Dwyer as commander of CSG 9. (U.S. Navy photo by Mass Communication Specialist 2nd Class Pyoung K. Yi/Released)