Project 10073 Record Card and Air Intelligence Information Report — 5 November 1957, South Korea

This document comprises an Air Intelligence Information Report (IR-6-57) and a Project 10073 Record Card detailing an unidentified flying object sighting that occurred on 5 November 1957, near Seoul, South Korea. At approximately 1650Z, four members of Company E, 2nd Medium Tank Battalion, 40th Armor, observed an object in the sky. The witnesses described the object as having a bluish-white, glowing appearance, with a size varying from that of a 55-gallon drum to an egg, and a length estimated between one and 100 yards. The object was observed hovering close to the ground, where its reflection was visible in surrounding water-filled rice paddies. It reportedly dived toward the ground before rising again and eventually disappearing in a manner described as being like a light bulb turned off. The observation lasted approximately three minutes. The report notes that there were no erratic maneuvers. Weather conditions at the time included cloudy skies with high scattered clouds and seven miles of visibility. The investigating officer, 2nd Lt. David R. Perdue of the 314th Air Division, was unable to interview the witnesses directly. In his assessment, Perdue noted that while the description shared similarities with reports of weather balloons, there was no confirmed information regarding a balloon launch in the area at that time. The report also mentions that the witnesses reported a jeep or other vehicle in the area around the same time. The document was approved by Capt. John K. Hrdina of the 314th Air Division, Operations Intelligence. The report is marked as unclassified and includes technical data regarding winds aloft at various altitudes.