Colares Brazil — Operation Prato Air Force Investigation

Beginning in October 1977, the residents of Colares Island — a small island community of approximately 2,000 people in the Marajó Bay of northern Brazil — began experiencing nightly visitations by disc-shaped and cylindrical objects that descended at low altitude and directed focused beams of light at people. The beams caused documented physical effects including circular burns, hair loss, localized anemia, and puncture-like wounds to the skin in the areas struck by the light. Some victims required hospitalization. Local doctors documented and photographed the injuries. The Brazilian Air Force deployed a team under Captain Uyrangê Hollanda in what became Operation Prato — a secret aerial and ground surveillance operation to document the phenomenon. The team photographed numerous objects and collected hundreds of witness accounts over several months. Captain Hollanda later stated in interviews before his death that the operation photographed real craft that defied conventional explanation. The Brazilian Air Force classified the Operation Prato report SECRET; portions were declassified in 2004, providing the most detailed official government documentation of extended close-encounter UAP events in the Western Hemisphere outside U.S. records.