Given the current crisis in Ukraine, Sweden is carrying out numerous patrols in the Arctic. This partner has terrific air traffic surveillance capabilities. There are good reasons to believe that these two states could work together in the North and in the Arctic.
NATO is looking more and more at what is going on in the Arctic. In its last strategic concept document, there was a section on the Arctic, and another one on China. That shows that in NATO's eyes, there are currently short and medium-term threats in certain regions that it didn't concern itself with before.
The two states that I mentioned also have conventional capacities in the Arctic, should it ever become necessary to use them, but they also have an excellent marine capacity. Canada should have more discussions with these new partners if it ever finds itself in difficulty.