2012 Defenders of Liberty Air Show
The U.S. Air Force Thunderbirds crew chiefs walk in formation after launching their aircraft during the Barksdale Air Force Base 2012 Defenders of Liberty Air Show April 21. The Air Force Air Demonstration Squadron Thunderbirds, based at Nellis Air Force Base, Nev., is the Air Force's premier aerial demonstration team, performing at air shows and special events worldwide. (U.S. Air Force photo/Senior Airman Sean Martin) (Released)