190927-N-ZZ513-1135 SAN DIEGO (Sept. 27, 2019) Vice Adm. John D. Alexander, commander of U.S. 3rd Fleet, delivers remarks during a change of command and retirement ceremony aboard the Nimitz-class aircraft carrier USS Theodore Roosevelt (CVN 71), Sept. 27, 2019. Vice Adm. Scott D. Conn relieved Alexander as Commander, U.S. 3rd Fleet during the ceremony. (U.S. Navy photo by Mass Communication Specialist 2nd Class Natalie M. Byers/Released)