The ultimate sacrifice?
"He left us doing what he loved to do".
The words of Clive Wheldon, father of IndyCar driver Dan, at the Las Vegas Motor Speedway.
But they could equally have been spoken about who died a week later at the Sepang MotoGP. Or and killed over one terrible weekend in San Marino in 1994.
Or who lost his life in a training run for the luge competition at the 2010 Winter Olympics in Vancouver.
To reach the top at your sport demands incredible dedication and sacrifice - but should that sacrifice involve your own life?