Unless I've mixed up my planes, some folks insist that such late model planes have dual propulsion systems--conventional AND antigrav.
That would make a difference to me about deployment!
I'm not sure how much water can be held by things you read here and there but i've read (and heard from people involved with Boeing) that the B2 Stealth Bomber actually having anti-gravity technology.
LOL, the F-22 is a DOn quixote project.