It is a challenging environment in which to work. In simple terms, if you were to take an overlay of the map around Afghanistan, ISAF over the last number of years has made great advances in terms of expanding ground lines of communication in from the north by rail. A lot of those are bilateral arrangements--the U.S. with other countries, the U.K. with other countries--but it is inflow, as we speak. Clearly, we all understand that as we look to do mission transition, the collective nations are looking for opportunities for outflow, and again, there are significant nation-to-nation engagements that are happening.
I only say that the north, and you have alluded to it...and that part of the world can be very difficult. It's long in terms of negotiation. NATO, because it doesn't bring anything to the table per se on the collective voice of nations, has a bit of a challenge right now, as it is trying, for instance, to establish treaty-level agreements with various northern nations and provide an exit strategy for materiel and such. Therefore, the south ends up being the primary ground line. Again, Pakistan, from my perspective, has worked reasonably well. It has its challenges, but in terms of cost and in terms of our ability to do business, we have essentially established a framework that allows us to use ground lines of communication.
Likewise, the air force...and it's probably a good question for them. But where I get involved is watching the overflight approval process that ends up being very dynamic. Again, it is country-to-country approval, so you find for the most part that the Pakistan overflight route is probably the primary one that we use, and then once you get outside of that, another challenge exists.
All that is to say that we have maintained reasonable relationships with Pakistan, but we have to respect how they operate. For instance, in terms of ground lines, they do not allow foreign militaries to move through. Therefore, our support arrangement for movement of materiel has been a contracted support arrangement that we've had in place for years, and it's relatively effective. So the short answer is that while challenging, it is workable.