Photo G3578: Members of the 212th MP Company (Sentry Dog), 720th MP Battalion, 89th MP Group, 18th MP Brigade, in the company compound on Long Binh Post, Bien Hoa Province, Military Region III, Vietnam during the summer of 1969. 1- unidentified, 2- unidentified, 3- SGT Joseph S. Hamilton quickly returning to his barracks to get his rifle for guard mount. If you can identify #1 or #3, please use this Email Link. Courtesy of SP/4 M. DuBois Miller, 212th MP Company (Sentry Dog), 1969-1970.