Sen. Mark Kelly spoke with NBC Nightly News' Tom Llamas about his decision to attend the State of the Union address, saying he has an obligation, despite other members of his party choosing to boycott. | NBC News

“Live from the Berlin Wall…” Tom Brokaw reports on the historic night in 1989. We're celebrating Brokaw's first 50 years with NBC News. Read some of his colleagues' fondest memories of working with him: http://nbcnews.to/2k73Ozf | NBC News