http://www.reuters.com/article/2011/...78F6U420110917
Federal investigators on Saturday tried to determine what caused a vintage World War II fighter plane dubbed the "The Galloping Ghost" to crash at a Nevada air race, killing nine people and raising questions about the safety of such events.
The investigation began on the same day that a World War II-era plane crashed in a fireball at a Martinsburg, West Virginia air show, killing the pilot.
In Nevada, more than 50 people were injured in the crash on Friday afternoon.