Project 10073 Record — King of Prussia, Pa. — 10 June 1966

This document contains a Project 10073 record regarding a civilian sighting of an unidentified aerial phenomenon in King of Prussia, Pennsylvania, on 10 June 1966. The witness, a 46-year-old female, reported observing a single, exceptionally bright, silvery and red object for approximately one minute at 0140Z. The witness noted that the object appeared to be pacing three aircraft flying in formation in a northeasterly direction. The witness explicitly stated that the object appeared suddenly and resembled a satellite, but its movement was not consistent with an orbital path. The report includes a formal questionnaire completed by the witness, which notes that the sky was clear and starlit, and that there was no sound associated with the object. The witness also mentioned previous sightings in 1964 and 1965. The official conclusion provided by the Air Force, signed by Major Hector Quintanilla, Jr., suggests that the object was likely the Echo I satellite, noting that Echo I had been in the area 20 minutes prior to the sighting. The document includes correspondence from Wright-Patterson Air Force Base requesting the witness to complete the FTD Form 164 for further evaluation.