The U.S. Air Force Demonstration Squadron, the Thunderbirds, perform a synchronized upward climb during an aerial demonstration at Langley Air Force Base, Va., May 13, 2011. The annual AirPower over Hampton Roads open house provides a free venue in which the public can see modern and historical military aircraft and civilian performers in action. (U.S. Air Force photo by Airman 1st Class Kayla Newman)(RELEASED)