Project 10073 Record — Sighting Report, Manchester, Tennessee, 26 August 1969

This document contains a formal sighting report and associated correspondence regarding an unidentified aerial phenomenon observed on August 26, 1969, in Manchester, Tennessee. The primary witness, 2Lt Guy D. Pfeiffer, a former USAF pilot and current employee of ARO, Inc. at the Arnold Engineering Development Center, reported observing three bright, yellowish-white lights clustered in a triangular formation. According to the report, the objects traveled from ESE to WNW in a straight horizontal path, covering approximately 60 degrees of the sky over a duration of five seconds. The witness estimated the objects were at an altitude of 10,000 feet and moving at a speed of Mach 2, noting that they appeared similar to the navigation lights of a large transport aircraft but moved significantly faster. The sighting occurred at 2139 CDT under clear weather conditions. The witness, who was on his patio at the time, noted that the objects disappeared behind trees. The Air Force's Foreign Technology Division, specifically the Aerial Phenomena Office (Project Blue Book), initiated an investigation into the sighting, sending a questionnaire to the witness. The official conclusion reached by the project was that the phenomenon was likely 'Astro (METEORS)'. The file includes the completed questionnaire, sketches of the object's shape and movement, and internal correspondence between the Foreign Technology Division and the Arnold Engineering Development Center.