I wouldn't say we have complete knowledge. I don't have complete knowledge of what's going on in the land domain or on the surface on any given day. I have much more complete knowledge in terms of what's going on in the air. Frankly, we look at this as a risk assessment. We allocate resources to understand what's going on in the environment based on the threat that's posed to us. The threat is determined by both capability and intent, and we measure those kinds of things through intelligence and information sharing, and we allocate resources as a result, based on the threat.
I read the testimony from our Global Affairs counterparts, and they highlighted that they don't see a threat in Canada's Arctic. There is no threat. In terms of applying resources to understand what's going on in the underwater domain, resources are applied, some of which I can't talk about, but there are capabilities that Canada and the U.S. have to understand what's going on there.