SANTA RITA, Guam (July 31, 2020) Capt. Bret Grabbe (right), commodore of Commander, Submarine Squadron (CSS) 15, from Kansas City, Kansas, and Capt. Tim Poe, outgoing commodore of CSS-15, from Patuxent River, Maryland, pose for a photo in front of Konetzni Hall after a change of command ceremony. Grabbe relieved Poe as commodore of CSS-15 during a change of command ceremony on July 31, 2020. CSS-15 is responsible for providing training, material, and personnel readiness support to four Los Angles-class fast-attack submarine commands located at Polaris Point, Naval Base Guam. (U.S. Navy photo by Mass Communication Specialist 2nd Class Kelsey J. Hockenberger)