5. The pictures from CIA
In 2016, the US Intelligence Agency (CIA) released a number of photos of mysterious flying saucers that had appeared in the past that the agency had never made public before.
Another image released by the CIA is a strange, large, glowing disc, believed to have been taken on October 20, 1960 in Minneapolis, Minnesota, USA. This image has never been confirmed to contain any content, but it is believed to be one of the first examples of so-called "stealth UFOs", the term referring to flying saucers hiding in the clouds to avoid was discovered.