Photo G3397: Patch created sometime in late 1967 for the Cat Lai Detachment (Ship & Barge Security) 188th MP Company, 92nd MP Battalion, 89th MP Group, 18th MP Brigade, Vietnam. It was worn as a blouse embellishment above the right fatigue pocket, or just below it.  Courtesy of PFC Thomas D. Carroll, 188th MP Company, 92nd MP Battalion, 89th MP Group, 18th MP Brigade, Vietnam, June 1967-May 1968.