http://www.orbis.org/bins/index.asp
Mr. Albert L. Ueltschi, founder of FlightSafety International, Inc.,
helped to initiate the Orbis project.
http://www.orbis.org/bins/content_page.asp?cid=1-48-52 They are seeking Medical volunteers and most of the pilots, if not all, are US Citizens:
Orbis Flight Deck