Article Photos: Swearing age-old oath, Obama steps into 2nd term 14/24

President Barack Obama and Vice President Joe Biden, accompanied by Maj. Gen. Michael S. Linnington, Commander of the U.S. Army Military District of Washington, listen to Taps after placing a wreath at the Tomb of the Unknowns at Arlington National Cemetery in Arlington, Va., Sunday, Jan. 20, 2013.  (AP Photo/Susan Walsh)