I personally know the author and he is the most gentle man you can imagine. I think this quote says it all:
"Why do I own guns? Is it not to be tough or macho. I am a mild-mannered rabbi and businessman and the tough, macho image fits me poorly. Had my wife and I remained in Lakewood, New Jersey, where we lived when we married in 1997, we wouldn’t have thought of owning one. There, we perceived guns as the media portray them, violent instruments reflective of anger and belligerence. In Dallas it is different. Here they are seen as the means to defend your family in a time of danger, and a responsible thing to own. It took me a while to absorb this view, but I now appreciate it."