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This USAF Project Blue Book file, distributed by NICAP, covers the radar and visual sightings at Bentwaters and Lakenheath, England, on 13 and 14 August 1956. It contains the record card, Air Intelligence Information Reports, ATIC correspondence with Dr. J. Allen Hynek, and a retired controller's later letter to the University of Colorado describing an RAF interceptor being tailed. The Air Force attributed the radar returns to anomalous propagation and meteors, and the visual sighting to Mars.
Read from the scan by GLM-OCR; expect the odd misread word.
The unidentified flying object was picked up at an estimated 25 to 30 miles east south-east of Bentwaters and flew a constant course of $295^{\circ}$ to the vanishing point on the scope which was 15 to 20 miles north-west of Bentwaters at an undetermined altitude. Airman Vaccare estimated the speed of this object to be in the vicinity of 4000 miles per hour. This speed was calculated by comparing the speed of the object on the GCA scope with speeds that the operator is familiar with on the electronic simulator. A/20 Vaccare added that some ideas of the speed of the object could be computed from the fact that each time the GCA antenna completed a revolution the Blip from this object moved 4 to 5 miles on the radar screen. The GCA antenna completes a revolution once every two seconds. The weather was reported as clear with unlimited visibility.
## Lta Note and Note.
On 20 August 1956 the following information was received from lat Lt and lat Lt. concerning their serial search for subject unidentified flying objects. Lt. and pilots assigned to the 912th Fighter Interceptor Squadron, Beatters, England. The above named officers indicated that they were returning to Bentwaters from a 7-23 flight about 2130h, 13 August 1956. At this time they were ventored to the north-east of Bentwaters to search for unidentified flying objects which were being tracked by the Bentwaters USA. Lt. and stated that they searched the area to the north-east, east, and south-east of Bentwaters for approximately 45 minutes. Altitude of flight was between 2000 and 2000 feet. Results of this serial search were negative. Both officers reported that they observed a bright star on the horizon to the east of Bentwaters which might have been mistaken for an Unidentified Flying Object by the visual observer. Document, cited by the archive. The PDF is mirrored here; the original link is above. The text was read from the page images by GLM-OCR; expect the odd misread word. 22 pages are in the text index: search them above, or from the library's search.