Inauguration Day: Obama set for public inauguration
Barack Obama is to be publicly sworn in for his second term as US president.
Hundreds of thousands are expected in Washington for the event, which will feature music from Beyonce, parades, black tie balls and tight security.
They will crowd onto the Mall leading to Congress to see the president sworn in on the steps of the Capitol.
Mr Obama was officially inaugurated in a small White House ceremony on Sunday, as the US Constitution requires the president be sworn in by 20 January.