Obama and Biden lay wreath at Arlington

President Barack Obama, Vice President Joe Biden, Major General Michael S. Linnington (back L), Commander of the US Army Military District of Washington and Sergeant First Class Chad E. Stackpole (R) participate in a wreath-laying ceremony at the Tomb of the Unknown Soldier January 20, 2013 in Arlington National Cemetery, Arlington, Virginia. Both Obama and Biden will be sworn in today for a second term in office. (Photos by Michael Reynolds-Pool/Getty Images)