I witnessed a serious assault yesterday. A guy beating a woman at a roadside. I approached and he seemed to be going to walk away but actually walked a few feet away found a large piece of wood and proceeded to beat her with it. She was bleeding significantly. Managed to convince him to walk away with a tool I happened to have in the car in hand. Called the cops. Followed him on foot keeping my distance - tool still in hand - until we met the cops coming the other way and they arrested him. Sobering.