Master Sgt. Ryan Carson, U.S. Air Force Band, Vocalist for Max Impact performs for the audience during the National Parks Service Independence Day Celebration at the Washington Monument July 4. The U.S. Air Force band with special guest Jo Dee Messina performed for thousands of guests in attendance at National Mall including distinguished visitors, ?Wounded Warriors? from Walter Reed Army Medical Center. (U.S. Air Force photo / Staff Sgt. Nichelle Anderson)