A man closes off an entrance to the Last Stop shooting range in White Hills, Ariz., on Wednesday. Instructor Charles Vacca was killed at the range Monday by a 9-year-old girl he was teaching to use an Uzi submachine gun. John Locher/AP hide caption itoggle caption John Locher/AP The Two-Way - News Blog Kids At Firing Ranges? 3 Questions Follow Fatal Shooting An instructor was killed by a 9-year-old being taught how to fire an Uzi submachine gun. Along with debate over children's access to guns, the incident brought up a host of questions. Here are some answers.