 In 1961 , the RCAF obtained 66 McDonnell CF @-@ 101 Voodoo aircraft , one of the American designs the RCAF originally rejected , to serve in the role originally intended for the Avro Arrow . The controversy surrounding this acquisition , and Canada 's acquiring nuclear weapons for the Voodoos and Bomarcs eventually contributed to the collapse of the Diefenbaker government in 1963 . 
