An aircraft crashed Saturday afternoon during a demonstration at a West Virginia air show, killing the pilot, the West Virginia Air National Guard said Sunday. No one on the ground was injured, according to the (CNN). It was not immediately clear what caused the accident at the 2011 Thunder Over the Blue Ridge Open House & Air Show in Martinsburg, West Virginia. The pilot was flying a T-28 aircraft. The West Virginia crash came one day after another deadly air crash.