Project 10073 Record Card - Los Angeles, Calif. - 11 Jun 59

This document consists of a Project 10073 record card and an associated teletype report regarding an Unidentified Aerial Phenomena (UAP) sighting that occurred on June 11, 1959, in the vicinity of Vista, California. The primary witness, a Sergeant in the United States Marine Corps, reported observing a single, round object with a dull aluminum finish, estimated to be the size of a softball. According to the report, the object was initially observed directly overhead, where it remained stationary before heading northeast over the Palomar Mountains. The witness noted that the object performed a 360-degree turn before disappearing. The duration of the sighting was approximately one minute. The witness described the object as producing a sound similar to a low-flying jet. The weather conditions at the time were reported as unlimited and good. The report explicitly states that there were no radar contacts and no photographs taken. The investigating authorities, including the 751st Aircraft Control and Warning Squadron and the Air Technical Intelligence Center, concluded that there was no possible cause known to account for the UFO, despite the witness being assessed as 'completely reliable.' The documentation follows the reporting requirements set forth in Air Force Regulation 200-2, dated February 5, 1958.