The F-100Ds, last single-seater version of the first American supersonic fighter, provided with an autopilot and also armed with bombs attached to the underside of the wings, played an important role in the Vietnam war, with over 300,000 missions from August 1964 to July 1971, when the 35th Tactical Fighter Wing finally left Phan Rang to return to the United States. The 615th TFS was the first unit furnished with F-100Ds to reach Da Nang on August 5, 1964, followed on August 17 by the 401st TFW, stationed at Tan Son Nhut. The Super Sabres, familiarly known as 'Huns', a shortened version of 'Hundred', were immediately used for low-level night bombing missions, and during the first years of the war pounded objectives in South Vietnam where suspected concentrations of Viet Cong had been sighted. For this type of mission the F- 100Ds were armed with two CBU-24 bombs which, on opening, released a large number of anti-personnel devices, and two 750lb (340kg) napalm bombs. Once they had dropped their load, the Super Sabres proceeded to spray the zone under attack with their four 20mm cannons to complete the 'cleaning up' work. Because of their adaptability and, even more, the lack of a real alternative, numerous F-100 Wings were used in Vietnam, some of them consisting of squadrons of the Air National Guard, called up for front line service. The 3rd TFW alone carried out more than 100,000 missions in 1969! From the end of 1965 a number of two-seater F-100Fs, the Wild Weasel 1, carrying anti-SAM electronic equipment, were in action, operating from the Korat base in Thailand.