JOINT BASE PEARL HARBOR-HICKAM, Japan (Jan. 7, 2022) Cmdr. John Nilles salutes the sideboys following a change of command ceremony for the Los Angeles-class fast-attack submarine USS Springfield (SSN 761) on the submarine piers at Joint Base Pearl Harbor-Hickam. Cmdr. Andrew Domina relieved Nilles as Springfield�s commanding officer. (U.S. Navy photo by Lori Cravalho)