Both breath and adrenalin control would be equal parts
in your accuracy in a high stress situation he was presented ..

He did have a slight advantage in that he heard them coming and least
was ready with his weapon unknow to the perp .. Who may well
have had intention of raping the woman once in the house and was
over occupied by those thoughts ..

I would like to know a little about his training history and how
many rounds lifetime he has shot !!