 Complete the following phrase:  Dibble was best known as the senior newsreader for ABC-TV, beginning with the first televised news bulletin on ABN-2 Sydney on 5 November 1956. He reported the biggest news stories of the period, including the Soviet intervention in the Hungarian Revolution in his very first bulletin; the events in Hungary caused the scheduled commencement of the ABC-TV news service to be brought forward, the assassination of John F. Kennedy 1963, the disappearance of Prime Minister Harold Holt 1967, the Apollo 11 Moon landing 1969, the destruction of Darwin by Cyclone Tracy 1974, and the 