Hovercraft called Patrol Air Cushion Vehicles (PACV) are used in the Vietnam War, in conjunction with Bell UH-1 Iroquois Huey helicopters. Narrated by Hollywood actor Dana Andrews. The Patrol Air Cushion Vehicle (PACV) was a United States Navy river patrol hovercraft used during the Vietnam War. The PACV was based on Bell Aerosystems Bell SK-5 hovercraft; a licensed version of the British Saunders-Roe (later, British Hovercraft Corporation) SR.N5 hovercraft. The SK-5 was adapted for American military use in 1965. Three were purchased by the U.S. Navy for operations in the emerging Vietnam War.