Photo G2011: Yen (?), worked in the 188th MP Company, 92nd MP Battalion, Vinh Long Detachment Day Room Bar known as the “Last Chance Saloon” in Vietnam, sometime in 1969. If you can make a positive identification use this Email Link. SGT James A. Davis, 148th MP Platoon & 188th MP Company, 92nd MP Battalion, August 1968 to June 1969.