Project Blue Book Case File
Not given exactly (Atlantic), December 1960December 1960
Summary
On December 13, 1960, three pilots observed four unidentified flying objects at different times over the Atlantic Ocean west to north of their position. The pilots were conducting visual flight training exercises when they spotted the objects flying between 15,000 and 40,000 feet. One pilot described an object with a cone or smoke trail observed against a bright star background. The objects moved at speeds ranging from hypersonic to Mach ten with estimated elevation of 14 to 15 degrees above the horizon. No radar contacts were made by local ground control intercept stations. The Air Force evaluation is unknown.
Reported location
Not given exactly (Atlantic), December 1960
Date of incident
December 1960
State / country
? / XX
Page count
3 scanned pages
USAF evaluation
unknown
Microfilm
T1206, Roll 41