Okay.
The basis for the study goes back to working group committees that were held many years ago when this issue was first raised. There was a comprehensive risk assessment that took place. That risk assessment included a number of various stakeholders not only from industry, but other groups within Transport Canada. They studied the regulatory regime in Europe, Australia, the United States.
The risk assessment in fact went further. Without getting into the details of the risk assessment, they looked at the actual residual risk that would be associated with it, and they made decisions on how to mitigate that residual risk. It was the decision of that working group, which I won't go back into because I don't have the historical context, that harmonizing the rules internationally and transborder—