The reason for that is just out of the ongoing concern we have for the financial health of the short-lines and their ability to stay up to speed on all of the safety regulations. The locomotive video and voice recorders, I think, are imposing quite a cost on them. That's not to say it shouldn't be done, but I think we're all continuously concerned about how well they can hold up, based on their own realities there.
Can you talk about your risk assessment process, particularly when it comes to the transport of dangerous goods? Are you satisfied that you have enough data? Are you collecting enough information about the kinds of shipments being made, how they're being made, when they're being made, etc.? We're managing risk as opposed to doing other things that some people would see as more effective. Talk to us about risk management.