190409-N-ZZ999-005 ANDAMAN SEA (April 9, 2018) The Los Angeles-class attack submarine USS Louisville (SSN 724), the underway replenishment oiler USNS Guadalupe (T-AO 200), the Royal Thai Navy frigates HTMS Taksin (FFG 422), HTMS Long Lom (FS 533), and HTMS Bhumibol Adulyadej (FFG 471) sail in formation during Guardian Sea 2019. Guardian Sea is a premier exercise that demonstrates the U.S. and Royal Thai Navy’s commitment to ensuring that they are ready to counter any threats together. (U.S. Navy photo courtesy of the Royal Thai Navy by Cmdr. Kamchai Charoenpongchai/Released)