Well, the Americans are fully prepared to go ahead and build their own system on their own with little or no Canadian participation, and if they do, then it will be run through USNORTHCOM and other related commands. From their point of view on whether it has to be done through NATO, I would think the answer would be no, but I would think to the extent that we want to be involved in it, then I'm not sure I would see the rationale if I were starting from anywhere other than NORAD.
On October 30th, 2014. See this statement in context.