According to the Pierre Sprey, co-designer of the F-16, the F35 is a turkey. Inherently, it's a terrible aeroplane. An aeroplane built for a dumb idea. A kludge that will fail time and time again. Judging from the bajillion times the F-35 fleet has been grounded, well, he's probably not wrong.
It's a trillion dollar failure. Watch Sprey eviscerate the F-35 in the video below.
Picture: Jim Hazeltine