Photo G2840: "Mac" ? of A Company 720th MP Battalion, 89th MP Group, awaiting Blackhorse convoy escort duty at the staging area on Long Binh Post, Vietnam, 1969. If you can provide his full name use this Email Link. Courtesy of SP/4 Norm Bresinski, A Company, 720th MP Battalion, 89th MP Group, 18th MP Brigade, 1969-1970.