Photo G1920: SP/4 Floyd E. Johnson and his sentry dog, both assigned to the Soc Trang (Khanh Hung) Detachment of the 212th MP Company (Sentry Dog), 720th MP Battalion, 89th MP Group, 18th MP Brigade, move along the perimeter of the Soc Trang Airfield in Ba Xuyen Province of Military Region IV, Mekong Delta Region of Vietnam in 1969. Courtesy of the Article “212th’s Sentry Dogs/MP's Patrol Soc Trang Airfield”, December 1969 MP Journal Magazine.