(Project Blue Book, U.S. Air Force, Washington, D.C.)
Source: Fold3.com, Lindon, Utah
The source of the UFO incident is Donald R. Higgin,
Squadron Leader, Royal Air Force.
Quote from the document (Page 1):
“Dark gun metal hue. Delta winged had a third fin. Object
passed between two a/c on exercise at 22,000 ft . speed of object estimated in excess
of 240 knots. Pilot in formation observed obj. Others in formation did not see
UFO.”
The case is listed as “UNIDENTIFIED.”
The UFO incident occurred over Oceanside, California,
according to Pages 2-4.
(ufocasebook.com image)
Satellite photo of Oceanside, California (tageo.com)
(tageo.com photo)