1945 UAP Cases

Hanford Nuclear Site Luminous Disc 1945

A luminous disc was observed hovering over the Hanford Site nuclear production facility — producer of plutonium for the Trinity test and Fat Man bomb — in December 1945. Manhattan Project security personnel filed a classified report to Army Intelligence. The Hanford encounter is one of the earliest documented UAP observations over a nuclear weapons production facility, predating the 1947 Roswell incident.