Project Blue Book Sighting Report — West Chester, Pennsylvania, October 30, 1966

This document is a Project Blue Book sighting report concerning an unidentified aerial phenomenon observed in West Chester, Pennsylvania, on October 30, 1966. The primary witness, an individual with prior U.S. Navy experience on the USS Wright, reported observing an object at approximately 6:40 PM. The witness, along with his wife, mother-in-law, and four children, heard a loud noise outside and observed an object traveling slowly from west to east at a low altitude. The object was described as having various colors, including orange, yellow, red, and blue, and was noted to have red and blue lights, with the red light blinking. The witness reported that the object suddenly accelerated and performed a 45-degree right-angle turn to the south before disappearing at a high rate of speed. The witness attempted to verify the sighting by contacting a local radio station, a missile base, and the Philadelphia International Airport, all of which provided negative reports regarding radar contact. The Air Force, represented by Major Hector Quintanilla, Jr., responded on October 31, 1966, stating that the information provided was insufficient for evaluation and requested the completion of a formal questionnaire. The report includes multiple handwritten accounts and sketches from the witness, who consistently described the object as having a loud, rumbling sound and an orange-yellow glow. The official conclusion recorded on the form indicates that the data was inconsistent, particularly regarding the object's color and description, leading to a classification of conflicting data.