sentences:  As a young journalist, Kumm made the scoop of his life in 1967, when he was one of the few people who witnessed the dead body of Che Guevara after the execution of the captured revolutionary leader by Bolivian troops.Kumm described the scene in a November 11, 1967, exclusive for "The New Republic".In 2007, Kumm wrote a biography on Guevara called "Che".