Photo G2581: SP/4 David C. Cooper and SP/4 John R. Hieftje, Jr., members of the A Company Detachment at the at the civilian workers gate, Phu Loi Base Camp, Vietnam in June 1970. Courtesy of SP/4 David C. Cooper. A Company, 720th MP Battalion, 89th MP Group, 18th MP Brigade, January 1970-March 1971.