"The Reluctant Dragon" "Dumbo" Disney embarks on a good will tour of South America that would later result in two package films: "Saludos Amigos" and "The Three Caballeros." The U.S. enters World War II. Within an hour of the attack on Pearl Harbor, the Army is billeting troops and storing ammunition in Disney Studio buildings to defend California. Military security is introduced, and everyone, including Walt and Roy, has to wear an ID badge.