I think that it was a justifiable shooting. When a person shoves a weapon in your face and you have the opportunity to deflect the weapon or the persons hand and you are able to draw your weapon and place a bullet where it counts; you have had a good day. From what I was looking at, the first shot seems to be the shot that took effect. It does appear that more than one shot was taken. I think that his situational awareness is what saved his life. How many of us take the time to look in our left/right side view and rear view mirrors to see if someone is creeping up on us. I don't know were this incident took place but, I can not see charges being brought against this person.