US Army Reserve Captain Lawrence Coyne Helicopter 1973

On October 18, 1973, US Army Reserve Captain Lawrence Coyne was piloting a UH-1 Huey helicopter with three crew members from Columbus to Cleveland, Ohio. A large metallic craft approached the helicopter on a collision course. Coyne pushed the collective forward and dove. The craft halted and hovered directly above the helicopter. A green beam of light filled the cockpit. Coyne then noticed the altimeter was reading 3,500 feet and climbing — the helicopter was ascending despite the collective being in the down position. The craft departed. On the ground, four separate groups of civilian witnesses in cars independently reported seeing a helicopter and a green beam of light consistent with the crew's description. The case was reported to the United Nations Special Committee on Outer Space Affairs, and was included in UN UAP records. The altitude anomaly — helicopter ascending without pilot input — remains technically unexplained. The independent civilian ground corroboration from four separate vehicle groups makes the Coyne case one of the strongest contemporaneous multi-group corroboration cases in US UAP history.