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.