FLYOBRPT Report — Natrona County Airport, Casper, Wyoming, 23 March 1953

This document collection details a series of reports regarding an unidentified aerial phenomenon observed near the Natrona County Airport in Casper, Wyoming, on March 23, 1953. The primary incident involved a large, orange, disk-shaped object observed at approximately 2000 hours by three witnesses, including a former Air Corps member and a college graduate. The witnesses described the object as moving rapidly in a southerly direction, performing erratic, zig-zagging maneuvers, and appearing to 'survey' the base like a hunting dog before disappearing behind Casper Mountain. The object emitted no sound and left no trail. Captain Merton S. Evans of Detachment 4, 4773rd Ground Observer Squadron, conducted interviews with the witnesses and submitted formal reports to the Director of Intelligence at the United States Air Force headquarters. The documentation includes transcripts of these interviews, where witnesses clarified that the object was not a standard aircraft and exhibited behavior that did not match known meteorological phenomena. Despite the official conclusion on one form labeling the object as a 'balloon,' Captain Evans expressed his belief that the witnesses were intelligent and reasonable, and that further investigation by qualified personnel was warranted. The file also contains correspondence from J. Allen Hynek, who reviewed the case and others from the same period, suggesting that while some sightings could be explained as meteors or astronomical phenomena, others remained problematic. Hynek specifically requested more data on the Casper case to rule out balloons and suggested that the Air Force should consider stationing special observers at locations like Great Falls. The documents reflect the administrative process of the era, including the use of teletype messages, formal statements, and the challenges of managing a high volume of reports with limited resources.