That’s not at all what the article is saying.

Under the current terms of NORAD, the U.S. and Canada can operate in one another’s airspace to track or intercept threats.

Ambassador Pete Hoekstra cautioned that if Canada purchased fewer fighter jets, the U.S. would “fill those gaps” in security concerns.

“NORAD would have to be altered,” Hoekstra told CBC News.

One can read threats into that, but it’s quite far from threats of bombing.