The McDonnell F-101 Voodoo was a supersonic jet fighter which served the United States Air Force (USAF) and the Royal Canadian Air Force (RCAF). elays in the 1954 interceptor project led to demands for an interim interceptor aircraft design, a role that was eventually won by the B model of the Voodoo. This required extensive modifications to add a large radar to the nose of the aircraft, a second crewmember to operate it, and a new weapons bay using a rotating door that kept its four AIM-4 Falcon missiles or two AIR-2 Genie rockets hidden within the airframe until it was time to be fired. The F-101B entered service with Air Defense Command in 1959 and the Royal Canadian Air Force in 1961. US examples were handed off to the Air National Guard where they served until 1982. Canadian examples remained in service until 1984