I'm sorry, I'm running out of time and I have one more question, which I'd like to try to get you all to answer. It is a little bit repetitive of earlier questions, but I wasn't quite clear on the answer.
The question has to do with the cost of any additional regulatory burden of obtaining this railway operator certificate. It may be that you have to do similar things under your current regulatory system and that such matters would not impose a large burden, or it may be that they would. I'm still not quite clear on that.
Maybe I could start with Mr. Kelsey.