Project 10073 Record Card — Sunburst, Montana, 4 December 1957

This document consists of a Project 10073 record card and an associated military teletype regarding a UFO sighting that occurred on December 4, 1957, in Sunburst, Montana. A civilian witness reported observing a single, round, silver-colored object traveling at a high rate of speed. The observation lasted for approximately five minutes. The report indicates that the witness used binoculars to view the object, but no photographic or radar evidence was obtained. The military evaluation of the incident, conducted by the 778th Aircraft Control and Warning Squadron (ACWRON) based at Havre Air Force Station, was dismissive. The official conclusion recorded on the project card is 'Insufficient Data for Evaluation.' A handwritten annotation on the teletype further emphasizes the lack of substantive detail, stating that the report is 'worthless' because it provides no actionable information beyond the basic description of the object's appearance and movement. The documentation reflects the standard administrative process for handling civilian UFO reports during this period, where reports lacking corroborating data were quickly categorized as insufficient and closed without further investigation.