For those of you who may not know, the Avro Arrow was a Canadian designed and built delta-winged interceptor that was rolled out in the mid-1950s.
After the start of it's test flight program, with a half dozen prototypes already flying and the production line spooling up, two Soviet moles were found to be in the lower ranks of the many design teams involved. The aircraft's production order from the Royal Canadian Air Force was cancelled, the prototypes destroyed, and all the papers burned.
The Avro company had developed not only the aircraft itself, but also it's Iriquois engines, and was possessed of a great amount of expertise built up not only from this aircraft but from it's previous work on the Canadair F-86 Sabre, which the USAF had used in the Korean War.
When the Canadian government shut the project down, a lot of the design team (now jobless) left to join the only other game in town for people with their design know-how: the US Space Program.
Ex-Arrow designers had their names on the Gemini, Apollo, Skylab, and Space Shuttle programs.
Others went across the Atlantic and ended up working with Hawker-Siddeley to help design the Concorde.
So...to all those Canadians and Canadiaphiles (I did a tour in the PPCLI, but I'm still an American), what would have happened if the Canadian government had let Avro and the RCAF keep the Arrow?