UFO Sighting Report — Guam, 31 December 1956

This document collection details a UFO sighting reported on December 31, 1956, over the Guam radio range. A pilot from the 41st Fighter-Interceptor Squadron, flying an F-86D, observed four round, red objects, described as the size of a silver dollar at arm's length. The pilot initially mistook the objects for a B-47 aircraft and attempted to intercept them. The objects demonstrated complex flight behavior, including circling the interceptor and maintaining a position outside the aircraft's turning radius. The pilot reported that the objects were at his altitude of 20,000 feet MSL before climbing to 30,000 feet MSL. The pilot eventually had to break off the encounter due to low fuel. The report was filed by 2nd Lt. Charles E. Heidenreich. Intelligence assessments from the Air Technical Intelligence Center (ATIC) initially expressed caution, noting that while the maneuvers suggested an aircraft, the high reliability of the observer warranted an 'Unknown' classification pending further investigation. Subsequent correspondence between ATIC and the 4602nd AISS confirmed that no further information was received regarding the incident. Ultimately, the official conclusion recorded on the UFOB index card states that the sighting was caused by an aircraft known to be in the area, despite the initial uncertainty expressed by intelligence officers.