And Kovko makes two

The Daily Telegraph had an item the other day about Private Jake Kovko's death in Iraq on 21 April this year from an injury sustained from his own pistol. Their point was that this was not the first time such an incident has happened. They told of another serviceman, Trevor Petith, in Vietnam - who on 21 April 1985 also died from an injury sustained from his own weapon. 21 years to the day.
I did some quick research (read "google") on Petith and although he is mentioned on a couple of sites, it doesn't say what happened to him - just that his holidays had been cancelled and that was the last time his family saw him alive - and that his homecoming was sad.