UFOs Declassified: Black Triangles

  • 46m
  • HD
  • TV-PG

For decades, sightings of dark, delta-shaped flying objects have been reported in North America and Europe, all filed under an ominous name: "Black Triangles." Join our investigation as we attempt to determine if these UFOs were optical illusions, top-secret military test planes, or the best examples of extraterrestrial visitations on record.