For the second day running, a World War Two-era aircraft has plunged from the sky at a US air show.
This time, in West Virginia, only the pilot was killed.
At the earlier disaster in Nevada, the death toll has now risen to nine after a 1940s fighter plane came down in front of a grandstand. In the cockpit, veteran Jimmy Leeward, who had worked as a Hollywood stunt pilot, was among the dead.
Organisers suggest a mechanical fault was to blame. Investigators are keeping an open mind.
“The board will take a comprehensive look at all aspects that could have affected the cause of the accident and, again, what kind of safety recommendations we could make to make sure this does not happen again,” said Mark Rosekind of the National Transportation Safety Board.
Reports say the plane appeared to lose part of its tail before the crash, which injured dozens of people. Several are in a critical condition.
The 74-year-old pilot will also come under scrutiny in the investigation. Friends have said he was in excellent health.