I would start by saying that NORAD is always looking at the mission they've been assigned, and they're always looking at making sure they have the resources they need to meet the mission they've been given. There are constant discussions in NORAD, looking at the threat, where aircraft are, and how many aircraft they have assigned.
The commander of NORAD right now is looking very seriously at the evolving threat, and is in a process of having some very preliminary discussions about where NORAD should go in the future, under the context of NORAD modernization. Part of that is taking a look at the north warning system, as I said in my opening remarks, and making sure the system is appropriate to deal with the kinds of threats we may see in the future. The other part of it is looking at the resources NORAD has. That is all looked at on a regular basis.
We have fighter aircraft who are on alert in Canada. They're essentially put on alert state by NORAD. If there's an increase in a threat, they can increase their alert posture and essentially call more aircraft into an alert state, and be ready to respond given a higher threat.
I think in terms of numbers right now, NORAD is achieving the mission it's been given. We have those wings, as you said. We have two operational fighter bases. We also have some forward operating locations in Canada's far north, which NORAD regularly forward-deploys aircraft to if they perceive that the threat condition has changed. They regularly practise that.