A nation on edge braces for this week's transfer of power

The nation is entering inauguration week with an unnerving police and military presence guarding the vestiges of democracy -- with Americans holding their breath as federal officials warn about threats of violence and potential unrest fueled by President Donald Trump's corrosive and dangerous lies that the election was stolen from him.

Normally the inauguration of a president is a joyful event that brings thousands of people to Washington to celebrate. But with authorities determined to stave off the terrifying scene that unfolded during the violent insurrection at the US Capitol on January 6, Washington, DC -- once the crown jewel of democracy admired around the world -- now resembles a police state as authorities try to ensure a peaceful transfer of power when President-elect Joe Biden takes the oath of office on Wednesday. Some 25,000 National Guard troops have been deployed, military vehicles are blocking some of DC's streets, the National Mall is closed, and tall fences and barricades protect this country's sacred buildings as movement is restricted.