Again, you hit the nail on the head there. We have opportunities and problems that are created by a warming north.
I think I'd probably hit more on the positive side in terms of an extended marine season, a marine transportation season that has extended way beyond what we were used to having even a few years ago, and looks like it's going to be extended even further. At the same time, the highway system in the north is typically extended by winter roads, whose season is being shortened. So we have this: on the one hand, the marine season is extended, but the truck transportation system, to the extent it relies on winter roads, is going to be reduced. How you deal with that raises the requirement, or at least the desire, to see more all-weather roads extended further north. That is the interim solution: you build out the southern portions of winter roads so that the northern portions would still have a reasonable season length and can be accessed during that season with an all-weather road extension from the existing highway network.
I think it's a combination of those two things. It's going to require more all-weather road construction, not all at once, but incrementally as we actually see the results of the warming north, and at the same time, from a positive point of view, we're getting an ability to increase it maybe ultimately into—who knows—a year-round basis, even.
Then what that tells you is that we might want the roads we build to be more from northern ports going south, whether they're all-weather roads or even winter roads, which will still have a decent season in the wintertime further north, rather than pushing them from the south. So it's a combination of those two things: increasing the access with the highway system where we don't have winter roads anymore, but also taking advantage of the extended marine transportation system in the Arctic.