Unusual Flying Object Over Chicago

This document details a sighting of an unusual flying object over Portage Park, Chicago, on May 24, 1951, at approximately 1950 hours. The primary witness, a 1st Lieutenant in the Army Reserve, observed the object alongside his uncle. They described the object as cigar-shaped, featuring an exhaust flame approximately one mile long and a blinking light at the front that flashed on and off, resembling Morse code. The object was observed traveling from the east for 12 to 15 minutes before turning west and disappearing from view. The witnesses estimated the altitude at 50,000 feet. The sky was clear, and visibility was reported as perfect. The witness attempted to find information about the sighting in the local press, specifically the HERALD AMERICAN, but found no reports, leading him to contact Fifth Army Intelligence. The report was subsequently forwarded through military channels, including the Tenth Air Force and the Continental Air Command, to the Air Materiel Command. The official conclusion recorded on the Project 10073 record card states that the duration of the sighting ruled out a rocket, and the object was likely an aircraft with a contrail. The document also includes an unrelated excerpt from a publication titled 'Menzel - World of Flying Saucers' regarding a separate incident in Downey, California, on May 29, 1951, involving thirty glowing objects, which the author suggests were likely birds, insects, or debris.