I bet even the almighty US cannot certify
that most of their tech is built at home.
Probably only the shit that matters. The nuclear weapons, first and foremost, and then an exponential decay in validation as you get less and less lethal.
I gotta figure the F-35 is cover for several substantial black budgets at this point, and that it's actually much cheaper than the paper trail would have us believe, simply because I remember reading about the presumed obsolescence of manned warplanes back when the YF-22 and YF-23 were battling for the F-15 replacement program, before the F-22 won.
My rationale being, if pilots are worthless in airplanes, then it doesn't actually matter if the program is properly funded, and it becomes an ideal smoke screen for time and effort diverted elsewhere.
I became even more convinced when I found out the F-22's and the F-35's avionics both were controlled over a firewire bus.
