We didn't look specifically at a carbon tax. The one thing we heard from industry and the air sector—and I think one of the other members pointed this out too—was the cost of travel and how the ticket prices would compare between a traveller, say, from Seattle going to northern Alaska, and a traveller from Vancouver going to northern Canada. My response was that it's hard to make that comparison, because in Canada the user-pay model that we have automatically inflates the price that's paid by a Canadian traveller, because they have to pay for every step of the way. In the U.S. it's a subsidized program. Not every element of the U.S. air transportation system is borne by the traveller. We never looked at the carbon tax and how that would impact cost. If you take a look at the existing structures that are in place, where some airlines allow for things like carbon offsets to compensate for the carbon that's generated by somebody's travel, then it does increase the cost, but at least it's voluntary.
I don't think I would be the best person to ask that question of, as we didn't look at carbon taxes in our report.