On February 20, 1959, Canadian Prime Minister John Diefenbaker announced the cancellation of the Avro Arrow CF-105 program, a supersonic fighter aircraft that had achieved a peak speed of Mach 1.98 during its testing phase. The decision resulted in the immediate layoff of 14,528 employees at Avro Canada. The Canadian government ordered the systematic destruction of all prototypes, blueprints, and manufacturing tools, citing the need to protect sensitive military technology from rival nations. Many of the displaced engineers later found employment at NASA, indirectly contributing to the development of American space programs. The Avro Arrow program was developed during the Cold War, a period of intense geopolitical tension between the United States and the Soviet Union. Canada aimed to build an interceptor capable of reaching Mach 2 and ascending to 50,000 feet to defend against potential Soviet bomber attacks over the Arctic. The first prototype, designated RL-201, was unveiled on October 4, 1957—coincidentally the same day the Soviet Union launched Sputnik, the first artificial satellite. The Arrow made its first flight on March 25, 1958, and by the time of its cancellation, five complete aircraft had been built, with a sixth, the first Mk 2 model named RL206, nearing the testing phase. The official reasons for canceling the program included financial concerns, with the total estimated cost reaching 1.1 billion dollars. The government also believed that ballistic missiles would soon render manned interceptors obsolete. National security was another concern, as there were fears that classified technology could be leaked to rival powers. In the weeks following the announcement, the government destroyed all prototypes, airframes, technical blueprints, and specialized tools. As a result, no complete Avro Arrow aircraft has survived. The cancellation had far-reaching social and economic consequences, as nearly 15,000 additional jobs were lost among subcontractors and suppliers connected to the program. Many of the program’s most skilled engineers relocated to the United States, where they played important roles in NASA’s space initiatives. The decision to cancel the Avro Arrow remains a topic of discussion in Canada, with many wondering what role the country might have played in the technological and space race had the program continued.