Late last year the Senate passed a bill that required U.S. intelligence agencies to share what they know about "unidentified aerial phenomena," the technical term for UFOs. That report was released last week. Spoiler alert — it doesn't confirm the existence of alien spacecraft. But it doesn't rule them out either.

Retired U.S. Navy Lieutenant Commander Alex Dietrich recounts her first-hand encounter with a UFO off the coast of Southern California. It's one of 144 sightings mentioned in the new unclassified report.

Historian and University of Pennsylvania professor Kate Dorsch explains some of the possible reasons why Americans report more UFO sightings than any other county in the world.

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