Some unidentified objects observed by U.S. Navy pilots exhibited extreme endurance, staying in the air for up to 12 hours without refueling.

Authors

• Person: Not available Organization: National Geographic
  How the Pentagon learned to start worrying and investigate UFOs

Sources

• How the Pentagon learned to start worrying and investigate UFOs www.nationalgeographic.com National Geographic via serper

Referenced by nodes (2)

• unidentified anomalous phenomenon concept
• United States Navy entity