Another article said the defender had a Kel-tec 9mm.
But, they had words and I guess it was glancing and that there was a hoodie involved as well.
I have a neighbor who is a very vetran cop. He shot a guy with a 9mm in the back of the head after being shot him self. The bullet ran around the side of the head between the skin and the skull. He was out of the hospital before my friend was. My friend carries a 1911 every day now.