200117-N-VR594-2027 SANTA RITA, Guam (Jan. 17, 2020) Cmdr. Steven Lawrence, commanding officer of the Los Angeles-class fast attack submarine USS Oklahoma City (SSN 723), explains the watch stations in control to Surgeon General of the Navy Rear Adm. Bruce Gillingham during a tour aboard Oklahoma City. The purpose of the visit was to discuss Gillingham’s priorities for the medical community and how they relate to maritime superiority and fleet-wide medical readiness. Oklahoma City is one of four forward-deployed submarines assigned to Commander, Submarine Squadron Fifteen out of Apra Harbor, Guam. (U.S. Navy photo by Mass Communication Specialist 2nd Class Kelsey J. Hockenberger/Released)