To counter the installation and use of Surface to Air Missiles in North Vietnam, a program using F-100Fs was started. In the fall of 1965, four aircraft modified with radar homing and warning capability and other needed electronic gear. The pilots were all seasoned in the F-100, and the backseat Electronic Warfare Operators were taken from B-52s and B-66s. The project was dubbed Wild Weasel, with the crews and aircraft deployed the Korat RTAFB in mid-November 0f 1965. While at Korat the Weasels were designated as the 6234th TFW. The SAM suppression missions were named Iron Hand. Usually, one F-100F would operate with a flight of F-105Ds dedicated to the Iron Hand mission. The first SAM site kill was recorded on 22 December 1965, validating the Wild Weasel concept. More crews and three more F-100Fs arrived at Korat in the spring of 1966. The F-100 flew its last Weasel mission in July of that year, being replaced by modified F-105F aircraft under Project Wild Weasel III.