Under the rules, the railways are obligated to follow certain requirements with regard to dangerous goods trains. One of them is conducting an elevated risk assessment, which they submit to Transport Canada. We don't approve them. We look at them and we conduct a due diligence review on their risk assessments.
We then make a call about whether we need to follow up through an inspection or through other oversight measures, to ensure ourselves that the appropriate level of mitigation measures is being put in place. That's Transport Canada's role.