That's a good question. I think the nature of the contractual relationship in this context is going to be one of the key questions that comes up in the service review. I will tell you frankly that it varies all over the map, depending on the individual shipper and what goes on.
The reason my members, particularly the larger members, are becoming more insistent all the time on demurrage charges and this sort of thing is that one of the fundamental changes that has taken place in railways, particularly in the last 10 years, is a clear indication that if you're going to be productive, competitive, and profitable, you must keep your assets moving. It's no different from any other kind of transportation business. Over many years, one of the big issues in railways was that their performance in that context was, frankly, not very good in the old days.