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What to know about the 1952 DC UFO encounter and the missing tape

The “Invasion of Washington” occurred over two weekends in July 1952.
Boulder Reporting Lab

The U.S. Air Force once paid CU Boulder to study UFOs. Here’s what it found.

From flying saucer sightings to an Air Force-funded study at CU Boulder, the city played an unexpected role in America's UFO ...