Retired U.S. Army sergeant who, from the late 1990s onward, claimed personal involvement in classified UAP recovery operations and access to a U.S. military catalog of non-human species. The claims have not been independently corroborated; included here with explicit credibility tagging.
Sergeant Clifford Stone was a United States Army veteran who claimed to have served on highly classified, specialized crash retrieval teams during his military career. He came forward publicly as part of the 2001 Disclosure Project, providing highly emotional testimony regarding his experiences. Stone's key contribution was his detailed assertion that the military had cataloged dozens of distinct species of extraterrestrial biological entities and that he possessed an empathetic ability to communicate with them at crash sites. He produced numerous declassified documents proving his military service and highlighting the reality of covert recovery operations like Project Moon Dust. His accounts remain a profound, albeit highly controversial, pillar of crash-retrieval and biological recovery lore.