Thank you very much for the question.
I do think you need to place it in the context of answering the bell, as we say, for naval readiness today and naval readiness in the future. There can be no doubt, as John highlighted, that delays in delivery require us to manage something that we're capable of, for sure, but the advantage of building home-grown capacity is that we build the ability, when we're in times of crisis, to have assured response. If we're relying on others at times, then the demands of multiple nations go to a single service provider, and as a result we may not always be happy with the result that's produced.