...why was it loaded (a blank should not reach that far off set)?
...if it was a blank that was fired close range (which can kill someone as was the case with Brandon Lee), why was it pointed at someone, and why at a non actor?
...why was it pointed & actually fired at someone at all since it is never necessary to do that, even in movies.
Quite sadly and ironically, the training given and promoted by the NRA would have prevented this whole thing.