I’m going to go out on a limb and guess that you’re unaware of violent crime that does not involve guns? Lets put the gun aside for a moment and analyze whether or not the guy felt afraid. If someone walks up to you in the manner this guy did, you get afraid. It’s WHAT THE PERPETRATOR WANTED THE GUY TO DO! He even said that he kept approaching because the guy wasn’t reacting the way he wanted. He was escalating the threat to get a reaction. If the guy didn’t have a gun he would have swung instead of shooting when backing away clearly wasn’t working. Fight or Flight is called a “reaction” for a reason. It’s not a fully conscious process. This “prankster” only did what he did because he was so large and intimidating that he knew he didn’t have to fear physical reprisal for his obvious assaults.