Monday's public inauguration ceremony will be witnessed by hundreds of thousands of people on the National Mall in Washington, DC.
Members of the Lee University Festival Choir and PS 22 Chorus perform before the ceremonial swearing-in of President Barack Obama at the U.S. Capitol during the 57th Presidential Inauguration, Jan. 21, 2013.
Security lines Pennsylvania Avenue in Washington, Monday, Jan. 21, 2013, prior to the start of the 57th Presidential Inaugural Parade.
Secretary of State Hillary Clinton and former President Bill Clinton speak with former President Jimmy Carter at the ceremonial swearing-in for President Barack Obama at the U.S. Capitol in Washington, Jan. 21, 2013.
People wave at President Barack Obama and Vice President Joe Biden as their limousine passes Monday, Jan. 21, 2013, in Washington.