Okay.
The second question I have goes back to the question of submarines. Our Victoria class submarines are old, going through a refit, and going to have only a limited life extension. Admiral Robertson alluded to the fact that Australia is moving up to 12. That was part of the defence white paper they came out with a couple of years ago.
Based upon the coastline that we have and the fact that the Arctic Ocean is under ice for a large portion of the season, do you feel that the best way to patrol the Arctic would be with submarines?
Second, not just from a deterrence standpoint of having submarines, but.... Gentlemen, what's the best way to hunt enemy subs and deter enemy subs? Is it the mixed fleet aspect, or is there any one particular asset that is more important than others?