Yes, and I'll let me colleague, Mr. Sloan, amplify my answer. Yes, the temporary permits are intended to be given temporarily. We've said that half of them were for five years or more. Some of them were for 10 years. One was for 13 years. What the requirements are for a temporary permit from Transport Canada are significantly less stringent than they would be for permanent approval. There is a cursory checklist. The only concrete thing, which we note in the chapter, is for a temporary approval. There has to be a demonstration of an active phone number. By contrast, with the permanent approvals, there is a long checklist that the operators have to provide. They have to provide an assessment of the risk, if there is an accident, what the plan is for first responders, what some of the risks to communities might be, and what the risks are in terms of environmental damage.