The Trojan Horsemen T-28 Warbirds Aerobatic Formation Demonstration Team performs aerial maneuvers during the AirPower over Hampton Roads open house at Langley Air Force Base, Va., May 13, 2011. The open house is a free three-day event featuring aerial demonstrations by modern and historical military aircraft and civilian performers. (U.S. Air Force photo by Airman 1st Class Camilla Griffin/RELEASED)