In terms of mixed fleet, with the transition to the F-35 with the F-18, we in fact will be operating a mixed fleet for a certain amount of time as we draw down the number of F-18s and increase the number of F-35s.
That will be a very intricate and very deliberate endeavour, given the shortages we have mentioned. We will be monitoring that very closely to ensure we are providing our personnel with the right training and exposure, so that we're able to maintain our operational commitments throughout that, which is also involving a very important discussion with NORAD, North American air defence, as our key partner in continental defence. We are more than interoperable with the United States for NORAD, to protect the continent, and that is something we aim to maintain throughout this transition.
In terms of a mixed fleet, we see very positive opportunities looking towards the future as we get beyond fifth-gen and towards sixth-generation aircraft, which are in development. They're in early development now with allies and partners. This is an area that we are looking into and working on with our research and development partners to learn more about.