Here is a bit of UFO history. Folks keep changing the way we refer to Unknown Flying Objects. They use initials like UAP, AFO, EFO, or even just Visitors. I say we stick with UFOs since just about everyone knows what you're talking about.
During World War II air crews saw lights in the sky they called Foo Fighters.
On the night of August 13-14, 1956, radar operators at two military bases in the east of England reported tracking a single radar blip and then multiple objects which displayed high speed, as well as rapid changes of speed and direction. Two jet interceptors were sent up, and were able to see and track them in a brief series of maneuvers. According to official U.S. Air Force reports, the sightings could not be explained by radar malfunction or by unusual weather.
On November 14, 2004, the aircraft carrier USS Princeton noted an unknown craft on radar 100 miles off the coast of San Diego. For the next two weeks, the crew began tracking objects flying around the skies over head. Some of these objects would appeared at 80,000 feet and then plummet to a few feet above the Pacific Ocean.
Here are a few UFO stories.