The point of the Canadian surface combatant is to have a single hull design for all of our large combat vessels. Within that single hull design, you can put different capabilities. The area air defence capability enables us to operate without allies providing that capability for us, so going into a dangerous area where there might be hostile aircraft wanting to attack our ships.
Yes, I think that should be a component. It involves a fairly advanced radar, and it involves more capable longer-range missiles than exist on the Halifax class frigates, but the answer is yes.