A declassified Pentagon-era memo has sparked fresh controversy after researchers claimed it reveals the US military believed it could predict when UFOs would return nearly 80 years ago. The document, dated December 1948, contains language referring to a recurring cycle of 'Flying Discs' and an 'imminent' new wave of sightings.
While the memo has reignited speculation that the Pentagon possessed advance knowledge of unidentified aerial phenomena the claims remain the subject of intense debate and have not been officially endorsed by the US government.