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Brokaw, Rather, and Jennings became the familiar faces of network news for more than two decades.

But changes began in December 2004, when Brian Williams took over from Brokaw as anchor of NBC Nightly News, after Brokaw's well-anticipated retirement, announced in 2002.

Rather also retired from the anchor seat of CBS Evening News in March 2005, albeit quite abruptly, after it was discovered that CBS used fake documents in a report on George W. Bush's Air National Guard record.

Jennings stepped away from the network anchor seat as well in April 2005, after he announced that he had lung cancer and would undergo chemotherapy.

After the announcement, ABC World News Tonight was hosted by Bob Woodruff and Elizabeth Vargas.