The United States Navy and Philippine Navy kicked off the week-long Maritime Training Activity Sama Sama at Naval Station Ernesto Ogbinar in San Fernando City, La Union on July 9, the US Navy said. In the at-sea phase to be held in West Philippine Sea, US Navy expeditionary fast transport USNS Millinocket , diving and salvage ship USNS Salvor and a P-8 Poseidon maritime surveillance aircraft will operate with Philippine Navy frigate BRP Ramon Alcaraz and landing dock ship BRP Tarlac .