I would say it's not customary, no, and this is really not a last-minute request. We spent a whole year working on the A-base review in tandem with Treasury Board Secretariat. We initially wanted to include it as part of the main estimates. At the Treasury Board Secretariat's suggestion, we moved it into the supplementary estimates (A). It was also convenient for us.
So it's part of the normal supply process. Supply is the main estimates, supplementary estimates (A), supplementary estimates (B), supplementary estimates (C). Supplementary estimates (A) occur in this trimester, supplementary estimates (B) occur before Christmas, and supplementary estimates (C) just before the end. If I were to be here on supplementary estimates (C) next March, I would be last-minute and I'd better have a good excuse.