Six Top-Secret Aircraft Mistaken for UFOs

Spy and stealth planes — some with bizarre, bat-shaped wings, others with triangular silhouettes that imply otherworldly designs — have long generated UFO sightings and lore. And official denials feed rumors that the government isn't telling us about alien ships. The CIA estimates that over half of the UFOs reported from the 1950s through the 1960s were U-2 and SR-