Project 10073 Record Card — Ogden, Utah, 10 April 1957

This document consists of a Project 10073 record card and associated teletype reports detailing an unidentified aerial phenomenon sighting over Ogden, Utah, on April 10, 1957. The primary witness report describes a white object with a red halo that was observed both visually and via ground radar. The object's flight path was characterized as moving from east to west, stopping momentarily, and then executing an abrupt 90-degree turn to proceed south. The observation lasted approximately 23 minutes on radar and 10 to 15 minutes visually. Several individuals, identified as radar operators and a radar repairman, were involved in the tracking of the object. The documentation includes technical details regarding the radar observations, noting that the object's behavior differed between visual and electronic sightings. The investigation concluded that the phenomenon was not anomalous. According to the CONAD forecast center, a balloon had escaped from Las Vegas, Nevada, and was drifting over the area. The presence of a 100-foot steel cable trailing from the balloon was cited as the cause for the radar and visual characteristics reported by the witnesses. The report ultimately classifies the incident as a balloon sighting.