I believe that's part of how the business works. These tanker cars have an extensive life. They run for 40 to 50 years. They were built in the States, mostly. They were not built in Canada. Quite recently, there was a manufacturing facility that started to build the new tanker car to the new standards, but it hadn't been built in Canada.
The fact is that we have accepted the recommendation of the TSB, and we've been working for the past three or four years in implementing the new requirements for all DOT-111 tanker cars.
We believed that to a certain point it was safe. We're always looking at improving safety. If we can add requirements to improve safety, that's what we do. We're doing it right now.