A look at ABC News' 24-hour Fourth of July programming marathon for the US' 250th anniversary, which it calls "the longest commercial broadcast in history" (Alex Weprin/The Hollywood Reporter)

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A look at ABC News' 24-hour Fourth of July programming marathon for the US' 250th anniversary, which it calls &quot;the longest commercial broadcast in history&quot; (Alex Weprin/The Hollywood Reporter)

here today, more tomorrow

A look at ABC News' 24-hour Fourth of July programming marathon for the US' 250th anniversary, which it calls "the longest commercial broadcast in history" (Alex Weprin/The Hollywood Reporter)