this docu seems to portray alien
visitations started after the
atomic blast.

they didn't

they have been coming here
since the beginning.

Ancient Atlantis had contact

Ancient Babylon had contact

Ancient Egypt had contact

Chris Columbus had contact

Adolf Hitler had contact

ALL of those before a US atomic test

Hitler even had 2 crashed discs
they were back engineering BEFORE
Von Braun and company was shipped
to the US in Operation Paperclip.

This video does not tell you full truth.
So you have to ask WHY NOT ???

one such answer is given in the docu,
that full disclosure would cause civilization
to collapse. Man gifted with too much
knowledge would be a threat to the worlds
in outer space.

We would cause our own destruction with
that knowledge. So it is explained away
with religion. Angels and Demons as
metaphors for alien visitors.