Project Blue Book Case #680. On March 28, 1950, an unidentified object was reported over Santiago, Chile — the capital of the long, narrow South American nation. This was one of the most geographically distant cases in the Blue Book database, reaching the project through intelligence channels.
Chile's position along the Pacific coast of South America and its own military's relationship with the United States meant that reports of unusual aerial activity were occasionally shared with American intelligence. Santiago, a city of over a million people nestled in a valley between the Andes and the coastal range, provided a dramatic geographic setting.
The case was classified "Unknown" — extending Blue Book's reach to South America.