We have about a decade, so you're exactly correct. We've structured all 12 ships, as far as the layout of compartments and spaces and cabling go, but we've only fitted four with the command and control capability, since you only need one on each coast. We can actually move the equipment to any of the ships and they can perform that role. By retiring the destroyers, it was to make sure that the navy, which works as a task group as their primary mode of operation, as Admiral Lloyd would explain far better than I, would actually maintain that capability until the arrival of the first Canadian surface combatant.
On November 17th, 2016. See this statement in context.