200130-N-VR594-1302 PITI, Guam (Jan. 30, 2020) Lt. Cmdr. Edgar Vanhorne, the undersea medical officer assigned to Commander, Submarine Squadron Fifteen (CSS-15), from Louisville, Ky., teaches an 8th grade class about first aid during a career day at Jose L. G. Rios Middle School. CSS-15 is responsible for providing training, material, and personnel readiness support to four Los Angeles-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/Released)