190122-N-MS318-002 SAN DIEGO (Jan. 22, 2019) Rear Adm. Colin G. Chinn, staff surgeon to the chairman of the Joint Chiefs of Staff, receives a detailed briefing of Naval Health Research Center's depth of readiness centered research work from directorate staff during a visit to the Naval Health Research Center in San Diego, Calif. (U.S. Navy photo by Amanda Wagner/Released)