The lessons learned have been ongoing, but the sophistication of the yards and the risk management and schedule management tools that go with it.... These are long-term programs, so it's not a lesson you learn overnight. This is a multi-decade program, and we will continue to learn as we go.
We're now in a better position to understand what the yards can truly deliver. We've put pressure on the yards to adjust their practices as well, but it's a joint effort. I think you'll see lessons continue to evolve, but our practices will get more sophisticated as well.