Project 10073 Record Card — Steelton, Pennsylvania, 4 June 1955

This document consists of a Project 10073 record card and associated teletype reports regarding a UFO sighting that occurred on 4 June 1955 in Steelton, Pennsylvania. The witness, a student and Ground Observer Corps (GOC) post supervisor, reported observing a single, white, cigar or egg-shaped object for approximately ten minutes. The witness noted that the object maintained a level flight path before fading out of sight, and explicitly stated that the object made no sound and possessed no unusual features. The report indicates that the observer was always alert for aircraft flying over the post. The military investigation, conducted by 2LT F. E. Bulliard of the 648th AC&W Squadron, concluded that there was no radar contact and no physical evidence associated with the event. The 4602d AISS, which evaluated the report, determined that no further investigation was warranted. Their assessment cited the changing description of the object's shape, the possibility that the object was a balloon, and the potential that operations at a nearby Naval Depot in the vicinity of Harrisburg could account for the sighting. The final conclusion recorded on the project card is 'Possibly Aircraft'.