Iris - I worked a scene here a couple of years ago.

Domestic violence. Pretty ugly stuff. It had been ongoing.

This time, by the time law enforcement and emergency medical/rescue responded, the abused spouse and children had already fled the scene. We had credible statements that there was nobody else in the house but the abusive fellow.

Who was standing on the porch, with a gun, screaming. And threatening the first officer on scene. (Fire/medical/rescue don't go in first here before law enforcement "secures" the scene, it's a rule.)

I watched that officer talk the Bad Guy down, over the course of the next hour or so. He stood there in range, using words not guns. One of the bravest, and dumbest, things I've ever seen. The officer has a family and kids, and I presume he wanted to go home to them that night. He chose to assume the risk to himself of not simply shooting the fellow waving the gun at him, and called off the officers who were in place with rifles, while he talked the man into voluntarily disarming, so we could sedate him and transport him to a facility for mental evaluation.