In March 13, 1997 something strange happened in Phoenix, Arizona. On that clear and ordinary evening, a one-mile V-shaped formation of glowing amber orbs glided silently through the heavens – attracting the attention of at least 10,000 people across the state of Arizona. This is the account of that evening and the ensuing government cover-up. However, this is much more than a narrative about the largest sighting of UFOs in modern times. It is, also, the story of how a hard-headed medical professional moved from scepticism to belief. It is also a wide-ranging tour of UFO history (from cave paintings to the 20th century), including extensive image analysis and the testimony of a variety of well-known figures, including the former astronaut, Edgar Mitchell. This revised and expanded edition includes material on recent UFO developments and recent testimony from eyewitnesses of the event in 1997 (including two airline pilots). Also included is the new admission from a previous public sceptic, former Arizona governor, Fife Symington.