U.S. Air Force Analysis of Flying Objects in the United States, 1-100

This U.S. Air Force compilation, released by the U.S. Department of War, holds numbered checklists and survey sheets for flying object incidents 1 through 100. It covers sightings by officers, test pilots and civilians at Muroc Army Air Field on 7 and 8 July 1947, and sightings by Portland, Oregon police on 4 July 1947. It also includes fireballs seen over California, Nevada and Oregon on 30 December 1947, a Houston fireball, and Finnish reports from January 1948.

From the source:Release of 2026-06-12 Incident: United States. Includes a "Check-List - Unidentified Flying Objects" that contains details about the incident. Many summaries also include witness lists or statements and other narrative reports or descriptions.

Stewart's attention called to unidentified flying object by Capt Ryherd Stewart estimates the P-80 at 250 miles on preliminary approach for landing at Hamilton Fld. Object was estimated to be following P-80 at three or four times its speed. A moment later another object appeared and flew a course described as something similar to a fighter's maneuvers when accompanying a heavier ship, on a left to right movement, over the object first sighted. The object continued this maneuvering until out of sight. Size could not be estimated but not believed to be above 6,000 ft altitude. Described as milky-white in color, and unlike any conventional aircraft seen.