I have information on hangar 18.
if one drives exactly 9 miles twoard the mountians away from
Las Vegas counting the cross street named RAINBOW as your
starting point you will come to an unlisted turnoff for an
unlisted park described by a rusty, bullet-ridden sign. The
grounds lead to huge cul-de-sac velley with a subdivision
that does not show on any maps at any Title Company. If one
watches for awhile, eventually small pick-up trucks labeled
"geologic survey" will appear from no where or head in and
vanish. If you follow you will be confronted by a anchent
two story house that has only mirrored windows that stands
on higher ground. You will be allowed to pass if you wish
but will find a log or some other obstatcle in the way so
you must take one of the other of many dirt roads. This
corner of the world is owned by Summa Corporation which was
and is Howard Hughes. This is really Federal Territory and
an "Entrance" to an elaborate underground city and highly
secure. Be careful. This is the hanger.

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The following is from a public post on the progidy information
servace. The message was from Art Mortensen.