The parts issue is certainly a challenge, but there may be a considerable supply. Take the ~120 PAA we have today, and subtract the Marines's 20. That leaves essentially 100 complete parts lockers, available for raping at will. It would be an interesting study for the logistics guys to look at consumption rates of the range of Prowler-unique parts, and see how long a cannibalization effort of the 100 would sustain 20 jets - without any intermediate or depot maintenance support. I don't have a good enough feel for that aspect of the business to tell whether it would be single digits of months or many years, but my SWAG would be that it would carry you for at least a few years.The problem is that the Corps would have to fund the parts and engineering tail that the Navy now funds, which is a lot of money that the Corps does not have.
Of course, if the Marines grab the ICAP-IIIs, like they probably would, there would be a very finite supply of ICAP-III unique parts; they'd have to pay out of pocket for those.
As a final solution, there are a whole bunch of impounded bicycles at Iwakuni that could be auctioned off to buy spare parts... :icon_tong