Project 10073 Record Card — La Puente, California, March 17, 1962

This document is a collection of sighting reports and questionnaires related to an unidentified aerial phenomenon observed over La Puente, California, on March 17, 1962. The primary witness, an 18-year-old male, reported that he and two companions were walking home from a bowling alley when they observed a bright object in the sky. Initially mistaking it for a star, they realized it was moving toward them at a slow, steady pace. As the object approached, they identified it as having a diamond-like shape with four red lights and two long white lights on the bottom, along with a slight dome-like appearance on top. The object hovered over their position before moving away toward the San Gabriel Mountains. The witnesses estimated the object's speed at 50-75 MPH and its altitude at 300-500 feet. They described the sound as a steady, low-pitched hum, similar to an electrical transformer or generator, which was quiet enough that the witness turned off his transistor radio to hear it better. The witnesses noted that the object did not oscillate and that the lights remained steady throughout the observation. The report includes multiple copies of the U.S. Air Force Technical Information Sheet, hand-drawn sketches of the object's shape and light configuration, and a formal letter addressed to the Department of Defense. The witnesses expressed uncertainty about the nature of the object, with one suggesting it might be a test of technology not yet revealed to the public. The documentation provides a detailed, albeit subjective, account of the event, emphasizing the witnesses' attempt to accurately describe the object's physical characteristics and flight behavior.