The National Security Agency keeps an extensive list of documents related to UFO sightings, strange light sightings, and even strange radio signals from outer space that they have tried to translate into English.

These documents were just declassified a few years ago, and they date back to the 1960's. However some pages remain black with redactions.

One 241-page document from the Communications Intelligence records hundreds of UFO sightings.

The NSA declined to comment when we reached out to them.