David Muir, former anchor of "ABC World News" weekend edition, tackles the ...
David Muir, former anchor of "ABC World News" weekend edition, tackles the responsibility of helming the weekday report of breaking news, taking the c...
David Muir, former anchor of "ABC World News" weekend edition, tackles the responsibility of helming the weekday report of breaking news, taking the chair previously held by other well-known journalists: John Daly, Frank Reynolds, Howard K. Smith, Harry Reasoner, Barbara Walters, Peter Jennings, Charles Gibson, Bob Woodruff, Elizabeth Vargas and -- most recently -- Diane Sawyer.
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