Once I got the Mental Health Hold the cops take it from there. It is an order from a judge to get him. The Order also removes liability for the cops in case they harm or break something.
My son had barricaded himself in the house we lived in. About 12 cops came (I had given them all the details regarding where my son may be in the house, not a weapon kid, the layout) they had a negotiator and more cops up and down the street and an ambulance. I stayed out front in my car per their instruction). They went to the back of the house and they were going to lift the sliding glass door out of it’s frame and they were using a toolbar. Then my son started to grab the tool bar and then next thing that happened was the whole glass door shattered (I got reimbursed for the glass) and I think my son went out front where they got him on the ground and cuffed him. He was yelling “ouch, ouch”. I covered my ears. He kept saying ask my mom. I said I’m right here and he said, that’s not my mom, looks like my mom but that’s not her. (Common for sz people to think their loved ones are being impersonated). The cops took him to the hospital. His father visited. He said it was very bleak as they don’t give them a lot of stuff (in case they try to kill themselves). On the second day they transferred him to a Behavioral Health Unit where they were permitted to give him meds on a 24 hour basis - willingly or not. About a week later the doctor went to court with my son and the judge made the court ordered meds decision.
It was a rough few months. There were many ways things could have gone - he could have ended up in the state mental hospital 4 hours a way where they keep people for a very long time. We were very fortunate and the meds worked. He was in that unit for 3 weeks and then transferred to a transition house for 3 more weeks where he had counseling etc. (They closed that transition house just a month after he was there).