In 1961, the Canadian government purchased its first CF-101 Voodoo interceptors from the American aircraft manufacturer McDonnell. Five Royal Canadian Air Force (RCAF) fighter squadrons flew the Cf-101 Voodoo. They were RCAF squadrons 409, 410, 414, 416 and 425. These squadrons were based in Canada, and were part of the North American Air Defence (NORAD) interceptor force. The RCAF squadrons employed the Voodoo until 1982, when they were replaced by McDonnell-Douglas CF-18 Hornets. The RCAF removed the last CF-101 from active service in 1984. The Voodoo was intended to intercept incoming Soviet nuclear bombers and was armed with the Genie air-to-air missile which required a nuclear warhead.