A 1969 United States Air Force document known as the Bolender memo revealed that non-public U.S. government UFO investigations continued after 1970, stating that reports of unidentified flying objects that could affect national security were not part of the Blue Book system.

Authors

• Person: Not available Organization: Wikipedia
  Unidentified flying object - Wikipedia

Sources

• Unidentified flying object - Wikipedia en.wikipedia.org Wikipedia via serper

Referenced by nodes (3)

• United States Department of the Air Force entity
• Project Blue Book event
• Project Blue Book concept