January 10, 1953 — Sonoma, CA
4:45 p.m. Retired Air Force Col. Robert McNab and a Mr. Hunter of the Federal Security Agency see a flat object to the northwest of their location 8 miles west of Sonoma, California. It is traveling about 2,400 mph and makes three 360° right turns in 2–3 seconds each in about 1/8 the radius required for jets (about 1/4 mile) and two abrupt 90° turns to the right and left, each turn 5 seconds apart. It almost stops, accelerates to its original high speed, almost stops again, speeds up again, and finally flies out of sight vertically. [Eberhart]
ATIC Report:
Status Report:
Sources:
Brad Sparks, Blue Books Unknowns Catalogue, Case 913, p. 189;
J. Allen Hynek, The Hynek UFO Report, Dell ed., 1978, p. 115-116;
Loren E. Gross, The Fifth Horseman of the Apocalypse: UFOs, a History: 1953 January–February, The Author, 1988, pp. 9-10;
NICAP, “Flat Object at 2,400 MPH”;