Photo G2923: SSG Costa 615th MP Company, 95th MP Battalion, 89th MP Group, 18th MP Brigade, NCOIC of the Thu Duc Detachment works on the ammunition locker at the National Police Station, Highway QL-1, Vietnam in 1968. If you can provide a first name for SSG Costa use this Email Link. Courtesy of SP/4 Gerald “Jerry” Depew, C Company, 720th MP Battalion & 615th MP Company, 95th MP Battalion, 89th MP Group, 18th MP Brigade, Vietnam, November 1967-November 1968.