160830-N-LY160-103 JOINT BASE PEARL HARBOR-HICKAM, Hawaii (August 30, 2016) Cmdr. Michael Beckette, commanding officer of the Los Angeles-class fast-attack submarine USS Tucson (SSN 770), addresses guests during a change of command ceremony in Joint Base Pearl Harbor-Hickam. (U.S. Navy photo by Mass Communication Specialist 2nd Class Michael H. Lee)