We have new details on that accident at the shooting range where a 9-year-old girl killed her instructor by losing control of that uzi she was firing. The girl's family breaks their silence and... See More
We have new details on that accident at the shooting range where a 9-year-old girl killed her instructor by losing control of that uzi she was firing. The girl's family breaks their silence and hearing the dramatic 911 call for the first time. ABC's Clayton Sandell has the story. Reporter: For the first time this morning, the family of this 9-year-old girl speaking out about a split-second accident sending shock waves through two families. 911, what is your emergency? I have a gun range officer that got shot in the head. Reporter: 39-year-old Charles Vacca was showing the girl how to fire a fully automatic uzi subma machine gun. Give me one shot. All right. At this popular shooting range last week outside las Vegas, but suddenly -- All right, full out -- She loses control, Vacca is shot. The moments after heard in this newly released 911 call. Is he breathing? Yes, he is. He's having convulsions. The ambulance ain't gonna work. Reporter: After firing the girl dropped the uzi grabbing her own shoulder in pain telling her mother the gun was too much for her. The girl's father told investigators it happened so fast that nobody, not even the girl, immediately realized Vacca had been shot. Is he still able to speak to you? No, he's completely unconscious. Breathe, Charlie. Reporter: The girl's family say they are devastated by this accident that turned what was supposed to be a unique and brief excursion from their summer vacation into a life-changing tragedy. Vacca's co-workers tried desperately to keep him alive. I don't think he's going to make it. Reporter: Seen here in his Facebook photo was flown to a hospital where he died. His family says they know what happened was an accident. The tragic burden now being carried by a 9-year-old girl. For "Good morning America," Clayton Sandell, ABC news, Denver.
This transcript has been automatically generated and may not be 100% accurate.