I would suggest that what an NPS offers us is an opportunity for a long-term commitment and long-term planning. I think that's a key element of the strategy.
Certainly, like any major decision of the complexity that we're talking about, it's never a seamless or perfect execution, but we're now where we need to be. As I say frequently, we're now no longer talking about building ships, we're actually building the capability to build those very ships.