It’s a bit more complicated than that I think. It was a NORAD response and that has a fair amount of integration between US and Canada. The base the American jets flew from has Canadian air force pilots stationed there—and is a western norad air defense post, so likely they are closest responding, and the Canadian hornets were coming from farther out (possibly Alberta?). But operationally the request came from a NORAD division in Canada, so it wasn’t like the US Air Force deciding to unilaterally violate Canadas sovereignty over a rogue Cessna. More like joint operation under mutual defense treaty kind of stuff like you’d get with NATO countries.

I don’t fully understand exactly how it all works but back in the pandemic a us F-22 shot down a spy ballon in Canada also I think, run via NORAD also. Canada maintains a lot of the northern radar and early warning stuff that NORAD uses as well.

Anyhow I wouldn’t blame Canadians for not being thrilled about American military assets zipping around overhead right now, just saying it’s not specifically remarkable as the article headline seems to suggest.

Isn't NORAD a joint defense organization between the US and Canada?

The article says jets from the US and Canada both responded and the US jets from NORAD were stood down once they new the plane had landed.

Seriously. Can our own jets not handle a Cessna?

I assume it could also mean hijacked from its planned course?

If you take control of it while it's on the ground it's just called a jacking