160212-N-LY160-125 PEARL HARBOR (Feb. 12, 2016) Cmdr. John L. Croghan, left, relieves Cmdr. John L. Croghan, right, as commanding officer of the Los Angeles-class fast attack submarine USS Jefferson City (SSN 759) during a change of command ceremony at the Battleship Missouri Memorial. (U.S. Navy photo by Mass Communication Specialist 2nd Class Michael H. Lee/Released)