Absolutely, and I think it would depend on the situation and on how that jurisdiction was managed in terms of law enforcement.
I would like to clarify, though, that obviously if someone is dangerous and is showing up in an airport, law enforcement and intelligence agencies often would be aware of that and would plan accordingly.
Also, what happens at the gate is that there's a call into Transport Canada's operations centre and they're wired immediately into law enforcement across the country. It's not like the person at the gate is talking, or necessarily making that person who could be on the list uneasy, or creating any kind of conflict or drama there. There may be discussion with the Transport Canada operations centre about what to do and how to respond.