[ILLEGIBLE], [ILLEGIBLE]Date unknown

OCR presents significant legibility challenges. The opening pages are heavily garbled, with pages 1-2 largely illegible due to copying or scanning artifacts. The readable case materials begin on page 3.

Two qualified Air Force witnesses, Captain Louis A. Pendergrass and Aviation Cadet [name illegible], observed an unidentified object on November 28, 1952 at approximately 1945 hours Pacific time while flying a T-33 jet trainer. The aircraft was positioned four miles southwest of Delta Radio in Utah at an altitude of 25,000 feet on a round-robin training flight from Nellis Air Force Base to Hill Air Force Base and back.

The witnesses described the object as yellowish-orange with a rose-amber tail extending approximately one mile behind it. The object maintained a straight and level course with slight side-to-side wavering, positioned at one o'clock relative to their aircraft. It appeared to be at an estimated altitude of 45,000 to 55,000 feet and was moving significantly faster than their jet. Both men observed it for roughly twenty minutes. The object remained in a fixed position relative to them until they flew past it, at which point it increased distance to about ten miles and disappeared.

Weather conditions at the time were excellent, with clear skies and a full moon. Winds aloft were from 260 to 270 degrees at approximately 20 knots. The file notes Captain Pendergrass had 1,902 flying hours total with 355 hours in jet aircraft, making him a reliable observer.

The investigating officer concluded the object was likely a comet positioned much higher and farther away than the witnesses initially believed, though no definitive explanation is stated in the file. This case file totals thirty scanned pages as held by the National Archives.