Humans have captured at least ten aliens, according to a former US intelligence officer.

US Air Force veteran David Grusch, a former member of the National Geospatial Intelligence Agency and National Reconnaissance Office, claims ET "pilots" were seized after a number of UFO crashes on Earth running into "double digits".

Though there had been some "interactions" with humans, most aliens were a "variety" of biological "entities" of which boffins had no understanding of the "physiology at all".

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