The issue right now is confidence, whether we have confidence that the F-35 program will deliver. That's pretty fundamental. The U.S. Air Force has a giant investment in that program. It is central to their future and they remain absolutely confident that it will deliver the goods. The U.S. process will take its course. With respect to the program's capacity to deliver on their expectations, they are fully confident. We've had discussions. Everybody's looking at the same things. Every nation in this program is also watching this closely. This is pretty fundamental to our capabilities in the future. If there's a problem, we need to be aware of it and we need to find solutions.
We remain confident that we will be able to transition our fleets within a viable timeframe for our current fleet. Is there a re-investment opportunity for the F-18? I think we've pretty much done what we can with that airplane. At some point after 2020, we will start facing some structural issues that will be difficult to reconcile and we will have to make some decisions. Based on what we see right now, we are confident that we can make this transition in a timeframe that gives us the flexibility to bring the F-35 into operation while putting the F-18s into retirement as we get into the 2020s.