Thanks. I may come back to you on this if I have time later, but I want to touch on the Nav Canada and air traffic control situation, especially with regard to Castlegar, which serves quite a large area. It would take someone four hours to drive to the next airport, if they couldn't fly in and out of Castlegar. It has always had issues during the winter about reliability because of weather, and they've been working hard, spending a lot of money, to fix those issues.
Now they're very concerned, because they're on the list of Nav Canada studies to see whether their tower would be closed. If it is closed, of course, it would make all that effort really moot. It might be very difficult to resume service in any meaningful way.
I'd like to start with Mr. Best about the issue of safety at airports like that, especially Castlegar, where you're in a mountainous situation. If you had an automated tower, what are some of the issues that would make it very difficult to service that airport?