AnomalyOn September 5, 2013 at 4:29 a.m., a witness on a break at his workplace sat down outside a building. He was then surprised by a succession of five bright white flashes that he observed in the direction of a GSM relay antenna near him. No particular noise was heard. No other testimony was collected. After a field investigation with the witness, the GEIPAN investigator carefully analyzed several hypotheses: the illumination of the cloud layer by flashes produced by the pantograph(s) of a passing train on the curved railway line located 2500m away in the observer's line of sight seems to account for nearly all of the characteristics described by the witness. GEIPAN classifies this case as "B": probable observation of flashes coming from an electric locomotive.
Val-d'Oise, France · 2013-09-05 · from the GEIPAN archive
An account in Val-d'Oise, France
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This is an official case file of GEIPAN, the French space agency's unidentified aerospace phenomena office, machine translated from French. The original text and the full investigation file are at geipan.fr. We reproduce it with thanks and remove anything on request.