NHA TRANG, Vietnam (June 6, 2021) U.S. Army Salvage Divers assigned to 7th Engineer Dive Detachment play a game of chess while in a hyperbolic decompression chamber after a dive during a Defense POW/MIA Accounting Agency (DPAA) underwater recovery mission in Nha Trang Province, Vietnam, June 06, 2021. DPAA’s mission is to achieve the fullest possible accounting for missing and unaccounted for U.S. personnel to their families and the nation. (U.S. Army photo by Sgt. Mitchell Ryan)