Yes, you'll have to take Cave Creek off the EOTS list. It was an error identifying that one as what Ruppelt listed. It shouldn't be a problem listing the actual EOTS case as Early 1947 (?) U.S. (?) then quote what he said about it, which is our only clue ("an F-47 pilot, and three pilots in his formation, who saw a "silver flying wing" ").
UNPUBLISHED RUPPELT MANUSCRIPT:
As documented proof, many unexplained sightings were quoted [in the EOTS]. The original UFO sighting by Kenneth Arnold, the series of sightings from the secret Air Force Test Center, Muroc AFB; the F-51 pilot's observation of a formation of spheres near Lake Meade; the report of an F-80 pilot who saw two round objects diving toward the ground near the Grand Canyon; and a report by the pilot of an Idaho National Guard T-6 trainer, who saw a violently maneuvering black object.
As further documentation, the report quoted an interview with an Air Force Major from the Rapid City AFB (now Ellsworth AFB) who saw twelve UFO's flying a tight diamond formation. When he first saw them they were high but soon they went into a fantastically high speed dive, leveled out, made a perfect formation turn, and climbed at a 30 to 40 degree angle, accelerating all the time. The UFO's were oval-shaped and brilliant yellowish-white.
Also included was one of the reports from the AEC's Los Alamos Laboratory. The incident occurred at 9:40 AM on September 23. 1948. A group of people were waiting for an airplane at the landing strip in Los Alamos when one of them noticed something glint in the sun. It was a flat, circular object, high in the northern sky. The appearance and relative size was the same as a dime held edgewise and slightly tipped, about 50 feet away.
PUBLISHED (Ruppelt p. 41) AND SAME IN UNPUBLISHED RUPPELT:
The document pointed out that the reports hadn't actually started with the Arnold Incident. Belated reports from a weather observer in Richmond, Virginia, who observed a "silver disk" through his theodolite telescope; an F-47 pilot, and three pilots in his formation, who saw a "silver flying wing"; and the English "ghost airplanes" that had been picked up on radar early in 1947, proved this point. Although not received until after the Arnold sighting, they all had taken place earlier.