Obama urges service, unity on 9/11 anniversary
Obama
Credit: AP
President Barack Obama hugs an unidentified visitor graveside at Arlington National Cemetery with first lady Michelle Obama standing by Saturday, Sept. 10, 2011, during a visit to Section 60 to pay their respect to all those who made the ultimate sacrifice in the past decade. Sunday will mark the 10th anniversary of the Sept. 11 attacks. (AP Photo/Carolyn Kaster)
