In an interview with Scott Pelley, D.C Mayor Muriel Bowser defends her decision to bring in the military ahead of Wednesday's inauguration of President-Elect Joe Biden, because "too many Americans have pledged allegiance to Donald Trump." Meanwhile, Ken Cuccinelli, the Department of Homeland Security's acting deputy secretary, tells Bill Whitaker the idea that President Trump would order a halt to the National Guard's security mission for next week's presidential inauguration "unimaginable." And Alex Smith, who overcame a catastrophic leg injury to play again in the NFL, ends his remarkable comeback season with an interview with Norah O'Donnell. Those stories on this week's "60 Minutes."

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