I will take a first stab, and then I'm sure I'll be able to get a legal mind to help me out on that one as well, but the answer is yes.
For example, you may have an American aircraft that is transiting over top of Canada to go to a theatre of operation, flying over the North Pole or whatever the case may be. Any regulations right there really are nested in the Transport of Dangerous Goods Act. That is really why we have any sort of act that overlooks that and has to do with the safety of anything that is being carried, should there be a crash or any exposure to Canadians to that kind of material.