I would be happy to take that as well, sir, if you're okay with that.
As the commanders of the army, navy, and air force at the time assessed that the figure of 5,000 plus the 5,800 units from the Leigh Fisher report was not meeting their operational needs, what in fact my organization did was reach out to the commanders of the bases and wings across Canada and consult with them for the first time on what their actual operational needs were.
That's how the figure was developed, through the bottom-up assessment of their local needs by the base and wing commanders for their operational requirements.