Article Photos: Hope and heroism: Obama hails post-9/11 resilience 2/28

  President Barack Obama and first lady Michelle Obama visit Section 60 at Arlington National Cemetery, Saturday, Sept. 10, 2011, in Arlington, Va., to pay their 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)