"World News Tonight" anchor David Muir kicked off ABC News' celebration of America's 250th birthday by climbing up through ...
David Muir, Diane Sawyer and Deborah Roberts talk to USA TODAY about ABC's 24-hour live broadcast for America 250 and the ...
In this exclusive clip from ABC's coverage of America's 250th anniversary, network anchor David Muir ascends to the top of ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results