We're not seeing the same level of aggressiveness, that is very clear. But what we are seeing, if you look at the last, say, three years, is a peak in intrusions into our air defence identification zone. They have a right, of course, to operate there; it is international airspace. But at the same time, we have declared those identification zones so that we know what's coming towards America. So we have seen a peak, especially in 2014, and a difference in the degree of sophistication in how they approach us. Of course, at NORAD we are concerned about the behaviour of Russia as a whole, thinking about Crimea, thinking about Ukraine, thinking about even Syria.
This is why I said in my opening remarks that our area of interest is global for many reasons, and I characterize the reasons for that in this way: We should never let an adversary think even a second that North America is soft. Therefore, everything that we do, everything that is visible, our infrastructure in the north, our operations, this is all very visible, and there is a deterrence value to it.
We care about what's going on in the world; we haven't talked about China, for example, and the South China Sea. We're also concerned about it at NORAD. Now it's very far away, but what are the repercussions back to North America, both the U.S. and Canada, of what the U.S. is going to decide to do in that area? We're not sure.
So again, to summarize, there's been a peak in activity—although in 2015 there was a lull as a result of a crash, so the fleet was grounded for a few months. We expect the activity to peak again, but no aggressiveness in same way that we saw in the media.