Shifting light in Châlons-en-Champagne with no verifiable data

Summary

A witness reported a light that moved and changed intensity over Châlons-en-Champagne. Despite several contact attempts, GEIPAN obtained no further data — not even the exact date of the sighting, let alone direction, time, or characteristics. The day was recorded arbitrarily. With no minimum information to work from, the case was classified as C.