Photo G2646: SP/4 Thrift, Sentry Dog handler of the 212th MP Company (Sentry Dog), 720th MP Battalion, 89th MP Group, 18th MP Brigade, at the Long Binh "A" Detachment company Motor Pool on Long Binh Post, Bien Hoa Province, Military Region III, Vietnam in 1969. Thrift divided his duties between Sentry Dog duty and the motor pool. If you can provide his first name, please use this Email Link. Courtesy of SGT Lloyd Kahan, Scout Dog Unit, 212th MP Company (Sentry Dog), 720th MP Battalion, 89th MP Group, 18th MP Brigade, 1969-1970.