There was a lot of turn-over (no pun intended) in strategic heavy bombers until the B-52. There were also all sorts of medium-heavy and heavy bombers between the B-17 and the B-52.

The MiG-25 had to swap engines after every flight.

Meanwhile, the A-10 is and was an amazing design and yet they want to ditch it.

The F-22, B-1A/B, B-2, KC-46 were previous boondoggles.

And now, ditching the Viper and Hornet for an Jaguar X-type with an unusable motor.

MIC loves it: more problems = more $$$