Maybe I'll start, and then Mario can pick up on some of the specifics.
I'll just give you a vignette essentially to help answer this. Imagine you're in Halifax. I'll choose Halifax because that's where I saw it happen. The MSOC and our MCTS folks are looking out on the ocean. They see something, and something isn't right about it. Maybe they have some background knowledge on that ship. Maybe it's a ship they have had questions about before. The information goes to the MSOC, and the RCMP say it is a ship they've been watching. The RCMP would normally allow a ship to come in. It's easier to do what you need to do alongside a wharf where, if you need to, you can bring real fire power. Boarding a ship at sea is never something you want to do if you don't have to. In this particular case, they know they have to stop it when it's still 10 miles out, so they'll load equipment on one of our ships, we'll take them out, and they'll make the interdiction that way.
To an earlier question, sometimes it's not just the RCMP. It can be immigration officers. It can be CBSA officers. It can be the combination of people we need to do the job when we get there.
A different way of doing it is through the combined efforts we have with the RCMP on security patrols. We carry their team or we can deliver an emergency response team, which is armed and boarding-capable, to where they need to be. From a security perspective, that's how it works day to day. You'll see the RCMP meet us at a port. The day I was down there, they met us at Lunenburg, and we picked them and their equipment up, and we went and stopped the ship that needed to be stopped.
With the Americans, Mario will be able to speak to the security perspective, but we have a superb relationship with the U.S. Coast Guard across a lot of fronts. We have joint co-operation for an environmental response. God forbid Deepwater Horizon should happen today, but we would deploy assets to help them. If it were to happen anywhere near our coastline, then they'd deploy assets to help us. It's a completely mutual arrangement for the environment and for search and rescue.
On the icebreaking side, that's where we make the bigger contribution.
The reason I make this point, I want to specify, is that there is a treaty that says you can't have military vessels on the Great Lakes, except in exceptional circumstances. That allows us to operate larger ships in the Great Lakes than the Americans can. Their icebreaking capacity tends to be smaller icebreaking tugs, and we have the real muscle, which they recognize. It's a contribution that they can't return in kind, because they're militarized and we're not. It's one of the restrictions on that.
For our security operations with them, Mario, maybe you want to speak to that.