I think you are correct. And .. that is the usual concern; he person with the gun will shoot one of the officers, a family member, or the person they’re angry with.
It’s a fine line; hardest job in the world.
It would not surprise me if there were some relevant backstory, perhaps involving drugs or psychological problems. 25-year-old man, living in his parents’ house, doing a little food service for pocket money ... it raises the possibility that he had ... er ... “issues.”
I sympathize with the parents. I have some children that I worry they’ll do something catastrophically foolish, and some of my friends have children who have done it. However, it was within Mr. Reeves’s power to leave his son alone in his room until ... whatever. Instead, he chose to involve the police. Let’s not forget that it’s possible Mr. Reeves saved someone’s life by making the call: his, his wife’s, the ex-girlfriend’s, a total stranger’s ...