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FILE – A helicopter flies over the Pentagon in Washington as smoke billows over the building on Sept. 11, 2001, after a hijacked airliner crashed into the west side of the building, killing 184 people. Most Americans were guided through the events of the day by one of three men: Tom Brokaw of NBC News, Peter Jennings of ABC and Dan Rather of CBS. Each had extensive reporting experience before that, Brokaw and Rather were at the White House during Watergate, and Jennings has been a foreign correspondent. (AP Photo/Heesoon Yim, File)