Langley AFB is an Air Force Base and also a CIA headquarters
compound, so this would be a very likely (Intelligence) sighting
that would not have been publicized.
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Kirtland Underground Munitions Storage Complex. It is part of
Kirtland AFB in Albuquerque, NM. It is a facility used to store
nuclear weapons.
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Yes.
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James (Jimmy) Carter, who was the governor of Georgia at the
time he reported the sighting.