Staff Sgt. Francis Maher, 28th Bomb Wing ground safety technician, finds a loose piece of metal sheeting under playground equipment on Ellsworth Air Force Base, S.D., April 26, 2012. Ground safety specialists inspect the parks and playgrounds around the base to ensure they are safe for children to use. (U.S. Air Force photo by Airman 1st Class Alystria Maurer/Released)