If they went rogue or something like that and the US government shut down their supply chain they'd be unable to fly in almost no time. Fighter aircraft take an

If they went rogue or something like that and the US government shut down their supply chain they'd be unable to fly in almost no time. Fighter aircraft take an enormous amount of maintenance to keep in an up status. This was one of the big concerns if the US/NATO ever went toe to toe with the Soviet Union. With the way modern weapons systems work if they both went all at it, it would not be long before one side or the other had enough of an edge up - just through attrition - that there would only be two options left to the losing side - surrender or go nuclear. You can't have two fully capable super powers fighting one another all out for years any more. You'll run out of stuff that works too fast.