Unidentified object observed over Colonia Anahuac, Mexico during the 1957 wave (1957)

Project Blue Book Case #5545. On December 13, 1957, an unidentified object was reported over Colonia Anahuac, Mexico — near the U.S. border. The sighting occurred during the dramatic 1957 wave that had produced the Levelland vehicle-interference cases. The cross-border nature of the report suggests it was observed by U.S. military or diplomatic personnel, or shared through intelligence channels. The case was classified "Unknown."