It would be interesting to know which entity owns which aircraft. Until then, all we can do is guess, so don’t panic.
Is the Hughes flying boat going anywhere, I doubt it. Someone would have to want it very badly to buy it and more to the point, to move it somewhere.
And, as seen in California and to an extent Oregon, it’s not a huge tourism magnet.

Several years back, the Museum (or Smith, or Evergreen?) bought a collection of antique helicopters from a restorer/collector in Hubbard, Oregon.

If any of those come on the market, I’d be interested.