Balloon Sighting Over Bunker Hill AFB

Summary

An object was observed for ten seconds at Bunker Hill Air Force Base in 1957. It was described as a red sphere the size of a basketball, at arm's length distance. The object was moving northwest at low altitude. Although several explanations were considered, such as aircraft, satellites, or astronomical phenomena, no definitive conclusion was reached due to insufficient data. The sighting was recorded on a Project 10073 record card.