Spectators watch as the U.S. Air Force Thunderbirds fly in a delta formation during the 2014 Wings of Freedom Open House Sept. 13, 2014. The U.S. Air Force Air Demonstration Squadron, better known as the Thunderbirds, performs precision aerial maneuvers demonstrating the capabilities of Air Force high performance aircraft to people throughout the world. The squadron exhibits the professional qualities the Air Force develops in the people who fly, maintain and support these aircraft. (U.S. Air Force Airman 1st Class J. Zuriel Lee/Released)