Joe Rogan voiced 'genuine fear' after hearing whistleblower claims that the US military has mastered 'alien' anti-gravity technology.

The celebrity podcaster was joined by investigative journalist Michael Shellenberger, who said he has spoken to insiders with 'direct evidence' about the Pentagon's long-rumored UFO 'crash retrieval' and 'reverse engineering' programs.

A staple of UFO lore dating back to the Roswell crash of 1947, these alleged efforts to reproduce the propulsion system of an alleged extraterrestrial spacecraft have long been linked to the US Air Force's 70-year effort to crack 'anti-gravity' power.

Faced with his guests' claims, Rogan worried aloud about the potential ramifications, or what would happen if such Earth-shattering revelations were confirmed publicly.

'Society collapses because we're faced with [the] illusion anyone of human race is in control,' Rogan opined, 'in the face of this overwhelming force from another planet.'

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