In 1977, the Brazilian region of Colares experienced a UFO wave where mysterious luminous objects, dubbed "chupa-chupa," reportedly attacked civilians with light beams, causing severe burns. The Brazilian Air Force launched a secret investigation called Operation Saucer (Operação Prato), led by Captain Uyrangê Hollanda, to document the events. These incidents remain a prominent part of the broader history of unexplained phenomena investigated by military agencies.