Hudson Valley Wave — Thousands of Witnesses 1983–86
One of the largest mass UAP observation events in US history, occurring over the Hudson Valley of New York and Connecticut from 1983 to 1987. More than 5000 individuals reported observing a massive boomerang or triangular formation of lights — often described as a city-block-sized craft moving silently — performing low-altitude, slow-speed maneuvers. Police, doctors, engineers, and IBM computer scientists were among witnesses. The New York Power Authority reported it approaching the Indian Point nuclear plant.