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.

REMARKS:

Statement given by Major J. C. Rise, Test Pilot, Murac Army Air Field, Murac, California.

On 7 July 1947, at approximately 10:10, while running up the XP-3H on the ground I noticed everyone was looking up into the air. Off to the north about 10,000 to 12,000 feet altitude, was an object that I assumed at first to be a weather balloon, but after looking at it for a while I noticed that it was oscillating in a forward whirling movement without losing altitude. It was traveling about 200 to 225 MPH, and heading from west to east.

The object was yellowish white in color and I would estimate that it was a sphere about 5 to 10 feet in diameter.