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WASHINGTON - JUNE 22: Moderator Brian Williams watches a video which pays tribute to late moderator Tim Russert during a taping of 'Meet the Press' at the NBC studios June 22, 2008 in Washington, DC. Williams announced that former Nightly News anchor Tom Brokaw would temporarily host the show through the presidential elections in November, 2008. (Photo by Alex Wong/Getty Images for Meet the Press)

WASHINGTON - JUNE 22:  Moderator Brian Williams watches a video which pays tribute to late moderator Tim Russert during a taping of 'Meet the Press' at the NBC studios June 22, 2008 in Washington, DC. Williams announced that former Nightly News anchor Tom Brokaw would temporarily host the show through the presidential elections in November, 2008.  (Photo by Alex Wong/Getty Images for Meet the Press)