Let me just add, and Mr. Hawn has said this in the past, that if you actually take the total acquisition pie and divide it by 65, you are actually looking at $138 million allocated per aircraft. If you keep quoting the $75 million, which is a fly-away cost, it risks understating. There's actually a really good paper from the Pentagon's acquisition unit covering why it's important to use the more fulsome cost number.
When you compare that to the latest selected acquisition report, you get a figure of $137 for all variants. So you want to do a little bit of discounting—some experts suggest 10% or 12%—to get to the A variant.
Again, as you note, on page 84 of the selected acquisition report, over the long term, there is a delta, based on current estimates, between the F-35 and the legacy aircraft it replaces. This is the issue that will have to be considered from a fiscal point of view.