Michael Shermer, in a review of Leslie Kean's book, suggested that the wave of silent black triangles seen over Belgium in 1989 and 1990 were likely experimental, classified stealth bombers.

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)

• Belgium location
• Leslie Kean entity