LS U.S. Marine garrison in Khe Sanh receiving enemy artillery fire. Shaky MS white & black US Marines taking cover in sandbagged trench. MSs US Marines loading, firing 81mm mortar, vehicle-mounted field artillery gun. Low angle LS US Marines jet fighter dropping bomb. CUs United States Marine Corps Colonel David E. Lownds discussing battle of Khe Sanh, using scale model of area in office. LS US Marine outpost ammunition dump in Khe Sanh. Spectacular LS/TLSs explosions at ammo dump. LSs US Marine artillery units firing from garrison during siege. LSs U.S. Douglas A-1 Skyraiders fighter-bombers dropping bombs, conducting air strikes against enemy positions. MSs US Marines loading, firing field artillery guns, 81mm mortars, returning fire. TLSs Marines taking cover in sandbag trenches. LS Marines carrying wounded on stretcher. LSs airstrip under fire while U.S. C-130 Hercules cargo plane taxis, explosions barely missing the aircraft.