I'd like to make a brief comment on the surveillance issue.
We're actually tasked at the Defence Science Advisory Board right now to look at the all-of-government issues associated with Arctic surveillance or Canadian surveillance. I believe there are committees in place now among the different government departments that have an interest in knowing what's going on throughout Canada. The environment department is one, as are the coast guard and DND, of course.
I believe that what is emerging is a rather complex and layered surveillance system that will involve satellites, unmanned vehicles, manned aircraft patrolling, and a response capability. This is actually being planned out now, and the assets are in some cases already being procured. The required infrastructure is in the planning stage and should probably be in place within the next three or four years.
I think that in some ways the issue is more related to how one cleans up an environmental disaster, should it occur, than to how one locates it. If you can't locate it, obviously you can't even start. As well, we have to think about what we're going to do when we find a problem. What we're already doing is, I think, along the right tracks, though, in terms of surveillance.