Fair enough.
Along that same line, you mentioned in a response to an earlier question the decommissioning of Centre Block, which coincides with a move to West Block. In my understanding, the expectations are that this would occur in 2018. Whether that happens or not, we'll see. Regardless of when it happens, you've been doing some planning for that. I wonder if you have any sense of what it is going to look like? What kind of challenges will that present? What kind of costs will there be?