Stock Photo Description: Four U.S. Air Force Thunderbird F-16 Fighting Falcon aircraft fly in formation over the skies of Ellsworth Air Force Base, S.D., during the Dakota Thunder Air Show May 31, 2009. This was one of many displays showcased for more than 40,000 people in attendance at the two-day event. (U.S. Air Force photo by Airman 1st Class Corey Hook). Stock photography by Department of Defense Public Domain.
