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Operation Saucer's skeptical commander becomes a witness himself. In Casimiro de Abreu, a crowd awaits a flying saucer.

The local doctor describes skin marks and anemia among residents, and the phenomenon gets a nickname.

That night's air traffic controller speaks for the first time, and a photographer says his negatives were taken to the US.

The search for classified records leads to Roswell, government-released videos and tips from former intelligence officials.