Pilot Roger Buis performs aerobatics in Otto the Helicopter during the AirPower over Hampton Roads open house at Langley Air Force Base, Va., May 13, 2011. The open house educates the public about military aerial capabilities and shows appreciation to the local community. (U.S. Air Force photo by Staff Sgt. Jeff Nevison)(RELEASED)

Pilot Roger Buis shows off his aerial aerobatic capabilities as he dives Otto the Helicopter downward before quickly soaring to the sky during the AirPower over Hampton Roads open house at Langley Air Force Base, Va., May 13, 2011. The open house educates the public about military aerial capabilities and shows appreciation to the local community. (U.S. Air Force photo by Staff Sgt. Jeff Nevison)(RELEASED)

Pilot Roger Buis performs a yo-yo stunt in Otto the Helicopter during the AirPower over Hampton Roads open house at Langley Air Force Base, Va., May 13, 2011. The open house educates the public about military aerial capabilities and shows appreciation to the local community. (U.S. Air Force photo by Staff Sgt. Jeff Nevison)(RELEASED)