UFO sighting in Williston Park, New York, in 1966

Summary

In April 1966, a civilian in Williston Park, Long Island, reported seeing an object in the sky that was initially thought to be a UFO. However, after investigation, authorities concluded that the sighting was actually a helicopter used for advertising. The report, part of the Air Force's Project Blue Book, includes witness accounts, descriptions of lights and movements, and a personal letter from the officer in charge thanking the civilian for their detailed observation. Although the case did not reveal any unexplained phenomena, its documentation reflects how the Air Force worked to clarify UFO reports.

The testimony includes details such as the time of the sighting, the exact location, and descriptions of lights that appeared to move in circles. Although some witnesses described the object as unusual, the investigation concluded it was a commercial helicopter with advertising lights. This case, like many others, shows how most sightings could be explained by conventional objects, though there was always room for curiosity and further investigation.