Obama urges service, unity on 9/11 anniversary
Obama
Credit: AP
President Barack Obama visits Section 60 at Arlington National Cemetery, Saturday, Sept. 10, 2011, in Arlington, Va., to pay his respects to those who have made the ultimate sacrifice in the past decade. Section 60, in the southeast part of the cemetery, is the burial ground for military personnel killed in the Iraq and Afghanistan wars. (AP Photo/Carolyn Kaster)
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