There are many UFO sightings in the world, but few involve military encounters or police chases. These are some of the most exciting alleged engagements between human forces and extraterrestrial visitors.
10. Tehran UFO Incident
Iranian air force commanders working in Tehran on September 19, 1976, began to receive calls from civilians, who reported weird lights in the skies over the city. There were no Iranian aircraft in the air at the time. At first, the general in command thought that the object was a star, but when he stepped outside of his command post to see it, he promptly ordered fighters launched to intercept.
Two F-4 Phantom fighters scrambled. The second, piloted by Lieutenant Parviz Jafari, closed within visual distance of the object, which was a ball of flashing light. As Jafari closed in, a second object detached itself from the first. Thinking he was under attack, Jafari tried to launch a Sidewinder missile, but as soon as he activated the missile, his airplane lost all electrical power, and the systems shorted out. He dived away, regaining electrical power as soon as he fell away from the object. Jafari continued to watch the object from a safe distance. Once again, an object detached itself from the first, diving down to the ground and coming to rest on the desert surface.
The next day, the Iranian air force went to investigate the site where the object had landed, but they found nothing. They picked up a beeping transmission, traced the source to a nearby house, and found a small beeper transponder. Skeptics of the story point out that the light may have been the planet Jupiter, which appears extremely bright in the night sky. The F-4 that Jafari was flying was well-known for mechanical and electrical failures, and one of the investigators believed that the beeper was from a United States C-141. It may have become dislodged by turbulence during an overflight of the nearby mountains.