Sad sad story and my prayers go out to the family.
That being said.. I would never leave the realtive safety of my home to confront someone outside. I would consider that a mistake but each person must judge their specific situation. Its really hard for me to understand why the teen didnt just speak to his father. Why run at him in the dark? I dont fault the father for feeling theatened.. I would have felt threatened as well.
A unwanted person outside my home is a trespasser.
A person entering my home without invitation is an intruder.
Life is a web woven by necessity and chance...