Since the 1940s, thousands of people have seen, photographed or claimed to have been abducted by UFOs. This documentary looks at some of the most famous cases and establish if these contacts are merely hoaxes, hallucinations or legitimate. What might be called the UFO era began at the end of world war 2, when American fighter pilots reported seeing small, fast-moving objects they called "foo fighters".Since the 1940s, thousands of people have seen, photographed or claimed to have been abducted by UFOs. This documentary looks at some of the most famous cases and establish if these contacts are merely hoaxes, hallucinations or legitimate. What might be called the UFO era began at the end of world war 2, when American fighter pilots reported seeing small, fast-moving objects they called "foo fighters".