Bizarre: 9year old girl accidentally kills instructor with gun during shooting lesson

A 9-year-old girl learning to fire a submachine gun accidentally shot and killed her instructor at ×Last Stop gun range in White Hills, Arizona on Monday Aug. 25th.
Authorities say when the girl pulled the trigger, the weapon recoiled over her shoulder and shot the instructor, 39 year old "Charles Vacca", in the head. He later died in the hospital.
The accidental shooting was captured on a cellphone.
I still say what does a 9 year old girl need shooting lessons for?
See capture after cut