Hospital Corpsman 1st Class John Miller, left, assigned to Mobile Diving and Salvage Unit 1, discusses medical procedures with members of the Vietnamese Medical Navy aboard the Military Sealift Command rescue and salvage ship USNS Salvor (T ARS 52) during a naval exchange activity in Da Nang, Vietnam. (U.S. Navy photo by Mass Communication Specialist 1st Class Jay C. Pugh/Released)