The U.S. Air Force cataloged 12,618 UFO sightings between March 1952 and December 1969 as part of Project Blue Book.

Authors

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

Sources

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

Referenced by nodes (4)

• Project Blue Book event
• UFO sightings concept
• Air Force entity
• Project Blue Book concept