U.S. Air Force Staff Sgts. Tonya Collett and Latoria Dinkins, 20th Dental Squadron, walk to gravestones to lay wreaths on them during the "Wreaths Across America" ceremony at Fort Jackson National Cemetery, Columbia, S.C., Dec. 10, 2011. Wreaths Across America occurs the second Saturday of December every year. People gather to lay holiday wreaths on the gravestones at national military cemeteries. (U.S. Air Force photo/Senior Airman Daniel Phelps/Released)