The U.S. Air Force Thunderbirds demonstrate an aerial maneuver that highlights their piloting skills and precision during the Dakota Thunder 2009 open house and air show here May 31. The two-day event featured multiple static displays, demonstrations, and aerial performances to attract more than 40,000 visitors to Ellsworth Air Force Base, S.D. (U.S. Air Force photo/Airman 1st Class Matthew Flynn)