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Claims to have reverse-engineered alien propulsion technology at 'S-4' near Area 51 in 1989; his account and credentials remain disputed and unverified.
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Former intelligence officer who testified to Congress in 2023 that the US runs a secret UAP crash-retrieval program; claims remain unverified by the Pentagon.
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Self-described former special operations contractor whose testimony to Congress in 2024 alleged personal knowledge of secret UAP-related retrieval activity.
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Former military intelligence officer who says he led the Pentagon's AATIP program and resigned in 2017 to advocate publicly for UAP disclosure.