Gentlemen: I think a lot of discussion is going on concerning something that is WAY OUT of our league. I thought this was a Personal Sub list to enhance our potential and offer advice to built our own PSUB. I honestly don't envision any of us building a flying sub. I agree with Stan - "To me the flying sub is SiFi, like in Voyage to the Bottom of the Sea. 2 different technologies that don t fit together." Ed