I think what we do is that we put together a proposal of what should and shouldn't be on that particular car and then we take it out to the private sector and ask them if they would agree with it, based on what we are carrying now, and what we're proposing to carry into the future.
We recognize that we're not the experts on this and we would ask the experts to make those recommendations based on the product that we carry, and on each product.
We carry aviation fuel, which is very volatile, and fortunately we've done it safely for the last 15 years. But we also want to know that we can make better arrangements or improve that situation should it ever occur.