According to a government memo, twenty percent of U.F.O. reports investigated by Project Sign lacked ordinary explanations.

Authors

• Person: Not available Organization: The New Yorker
  How the Pentagon Started Taking U.F.O.s Seriously | The New Yorker

Sources

• How the Pentagon Started Taking U.F.O.s Seriously | The New Yorker www.newyorker.com The New Yorker via serper

Referenced by nodes (2)

• UFO sightings concept
• Project Sign concept