The F-22: They could but it would not be fun. There were several articles which appeared here and elsewhere on the subject.
While the tooling and dies are thought to still exist and all the steps necessary to make another assembly line were videotaped, the skills needed to make it happen are found only with people now in retirement homes at best.
You would have to retrain an entire workforce. The result would take many years and be very expensive, let alone the costs of producing an actual plane.
China’s J-20 (the supposed F-22 clone) would be an operational antique by then.
Who knows about the A-10.
“You would have to retrain an entire workforce. The result would take many years and be very expensive, let alone the costs of producing an actual plane.”
It is worse than that. If you want produce new F-22s you would find a thousand tiny places where something is obsolete or should changed... Most of which you have no choice about. and then when you make the tweak something else breaks because you don’t have the original engineers there to tell you WHY it was done that original way. Costs would quickly sky rocket. Your better off taking the original and designing a new one that is the same basic capability. Same with the A-10.