Kaisong Korea radar-visual unidentified-object report — November 5, 1957

On or during November 5, 1957, at or near Kaisong Korea, Korea, the source reports the following sequence: BRIEF SUMMARY OF SIGHTING: The object was observed visually and detected on radar. The object was observed to hover, make sharp turns, and accelerate rapidly before disappearing. COMMENTS: This object was observed and tracked and it was determined that it was not an aircraft, satellite, or any known object. Subject: Possible Indications of Aircraft or Missile Activities in Cenkowan, Korea TO: AFCIN-HF3, AFCIN-4E4 FROM: AFCIN-HF2 DATE: 6 Feb 1958, COMMENT NR 2 The document discusses various observations and analyses regarding the reported trail, including: 1. The reported phenomenon cannot be re-established. The visual sighting which took place at Taegu, Korea on November 6, 1957 reported in your letter dated Nov. 7, 1957 has been investigated and the following information obtained: The object was observed near Taegu, Korea at approximately 1800 hours local time on November 6, 1957. The object was observed for a period of approximately 15 to 20 minutes. No aircraft or other conventional objects were observed in the area at the time. It is not known if a vapor trail would be left behind unless sufficient information is available regarding the characteristics of the object observed. The case is filed and closed as "Insufficient Information" since additional details are not available to conclusively identify the reported object. CALLEIT Colonel, USAF Deputy for Science and Components The text in the document is as follows: SPIR SUBJECT: (U) Unidentified Flying Object (UFO) TO: Director Air Technical Intelligence Center ATTH: ATIC-AFC Wright-Patterson Air Force Base, Ohio 1.