Document 1966-0001b: Postcard (inside) from the U.S.N.S. General Daniel I. Sultan, the troop ship used to transport the 720th MP Battalion to Vietnam 1-19 October 1966. This card was sent home to the parents of PFC Portnoy. Courtesy of SP/4 Allan Portnoy, B Company & 615th MP Company, 720th MP Battalion, 89th MP Group, 18th MP Brigade, October 1966-October 1967.