On July 7, the Russian-made MI-171 chopper from Regiment 916 of the
371st Air Force Division took off from Hoa Lac military airport in
Hanoi’s Ba Vi District and lost contact with its base 16 minutes later.
(There is not easy to understand things which people trying to keep in secret. literature review is only choice for an hypothesis and conclusion then.)
(There is not easy to understand things which people trying to keep in secret. literature review is only choice for an hypothesis and conclusion then.)
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