EE WAS INSTALLING THE OUTSIDE BOLT WHEN A PIECE OF ROCK FELL MEASURING APPROX 2' X 2'. THE ROCK WAS VERY THIN AND HAD SHARP EDGES. THE ROCK BOUNCED OFF HIS CANOPY AND CUT HIS LEG AT THE TOP OF HIS THIGH (RIGHT LEG). HE MISSED SHIFT ON 9/16/05 DUE TO HIS WIFE HAVING BABY.