In order to meet the timetable set by the RCAF, Avro decided that Arrow program would adopt the Cook-Craigie plan . Normally a small number of prototypes of an aircraft were hand built and flown to find problems, and when solutions were found these changes would be worked into the design and then the production line would be set up. In a Cook-Craigie system, the production line was set up first and a small number of aircraft were built as production models.   Any changes would be incorporated into the jigs while testing continued, with full production starting when the test program was complete. As Jim Floyd noted at the time, this was a risky approach, however: "...it was decided to take the technical risks involved to save time on the programme... I will not pretend that this philosophy of production type build from the outset did not cause us a lot of problems in Engineering. However, it did achieve its objective." 
While it has no more permanently stationed nuclear weapons as of 1984, Canada continues to cooperate with the United States and its nuclear weapons program. Canada allows testing of nuclear weapon delivery systems; nuclear weapon carrying vessels are permitted to visit Canadian ports; and aircraft carrying nuclear warheads are permitted to fly in Canadian airspace with the permission of the Canadian government.  There is, however, popular objection to this federal policy. Over 60% of Canadians live in cities or areas designated “ Nuclear Weapons Free ”, reflecting a contemporary disinclination towards nuclear weapons in Canada.  Canada also continues to remain under the NATO 'nuclear umbrella'; even after disarming itself in 1984, Canada has maintained support for nuclear armed nations as doing otherwise would be counter to Canadian NATO commitments.