UFOs vs. Airliners

Each year, there are millions of commercial flights around the world, and thousands of aircraft in the sky at any given moment. With that many eyes in the skies, it's little wonder that some of the most stunning UFO sightings have been reported by airline pilots. Relive three of the most riveting encounters, which took place over Alaska, New Mexico, and the English Channel. Join us as we open up recently declassified government files and talk to eyewitnesses in an attempt to explain the seemingly unexplainable.