Nbc

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David Gregory holding a 30-round magazine at NBC's Washington bureau (NBC/Meet the Press)

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This Monday, Dec. 17, 2012, file photo released by NBC shows Cassadee Pope performing on "The Voice," "Live Show" Episode 323A on the part one season 3 finale in Los Angeles. (AP Photo/NBC, Tyler Golden)

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**FILE** Singer-songwriter Carole King performs on NBC's "Today" show in New York in 2010. (Associated Press)

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Grammy-winning singer Carrie Underwood will star as Maria von Trapp in NBC’s live broadcast of “The Sound of Music” planned for late next year. (Associated Press)

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** FILE ** In this Nov. 2, 2012, file photo, Steven Tyler of Aerosmith performs on NBC's "Today" show in New York. (Photo by Charles Sykes/Invision/AP, File)

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Chevy Chase is departing the NBC comedy “Community,” capping a rocky stint during which the actor has expressed his unhappiness on the show. (Associated Press)

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“Today” show executive producer Jim Bell is leaving and will become executive producer of NBC’s Olympics coverage.

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This undated image released by NBC shows Vice President Joe Biden, left, with actress Amy Poeher, who plays Leslie Knope on the NBC comedy "Parks and Recreation," in Washington. Biden will appear on the NBC sitcom "Parks and Recreation" on Thursday, Nov. 15. (AP Photo/NBC, David Giesbrecht)

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Matches featuring Javier Hernandez (center) and his Manchester United teammates and the rest of the Premier League will be televised live on NBC’s family of networks starting next season under the network’s $250 million, three-year deal. (Associated Press)