Rung Sat Special Zone Patch

Rung Sat Special Zone Patch was worn mostly by USN Seawolf (HAL-3) personnel assigned to the zone.
Rung Sat Special Zone (Vietnamese: Đặc khu Rừng Sác) was the name given during the Vietnam War by the South Vietnam Government and American forces to a large area of the Sác Forest (Vietnamese Rừng Sác), which is today known as the Cần Giờ Mangrove Forest.
On 8 June 1962, the South Vietnamese Government organized the Rung Sat Special Zone (Đặc khu Rừng Sác) as a military region in order to defend the Lòng Tàu River, the main shipping channel from Saigon to Vũng Tàu.
The Viet Cong established base areas in the zone from the late 1950s.
Due to the difficult conditions for ground operations within the zone, the VC regarded it as a safe area, however from 1965 onwards the USAF began defoliating the area as part of Operation Ranch Hand.