It's a bit of a complicated answer, Mr. Chair.
I think when I was referring earlier to the targets where we need additional measures to meet those targets, that was for departmental operations. Let's put aside for a moment the ships and planes, the national security types of assets. On the 63% that we're currently on track for with existing measures, that's for operations. That's buildings, vehicles...not the national security types of assets.
I think there's still some work to be done by industry to see what kind of fossil fuel improvements they can make in terms of what you fly an F-35 with and what you fuel a ship with. As was mentioned, to the extent that those do not get reduced—and it's hard for me to speculate that far ahead—there is the option to purchase carbon credits. I have no sense at this stage of what the cost might be around that market.