CALYPSO MANEUVER Air Force Thunderbirds perform a calypso maneuver during the 2009 Dakota Thunder open house and airshow in Rapid City on Ellsworth Air Force Base, S.D., May 30, 2009. The Thunderbirds are scheduled to perform in more than 70 shows in the United States, Puerto Rico and the Far East this year. SHARE: Download: Full Size (0.05 MB) Credit: VIRIN: 278882-A-PIB93-106.jpg Photo Gallery