I think that's a very good way to phrase it.
Basically the same thing has happened with most of our regulatory regime over the years. You learn lessons; you find areas; technology changes; we learn more; we update the regulatory regimes.
Safety management systems, while they've been in place for a number of years, are actually relatively young, if you will, in terms of regulatory processes in the transportation safety system. The international bodies have all adopted this and are applying these as well. As we get guidance from those international bodies and as experience is gained around the world, the regulations are made more stringent and more effective in certain areas. As we learn lessons from our domestic experience with the compliance issues, and companies are able to articulate things in the way they are written in the regulations, those things are addressed in a feedback loop, and we modify and strengthen them. Exactly as happened with the Railway Safety Act review and the SCOTIC, Standing Committee on Transport, Infrastructure and Communities, recommendations with regard to legislative amendments that were necessary to make the rail safety SMS system more stringent, more clear, and more robust, those are now in the process of being implemented.