As far as I know prone position is good for ARDS, in the hospital in special beds, cystic fibrosis and some burn patients. Not for possible OD's in the street. I really hate these cases, I have police that are very close to me, but I do know from working in big city hospitals it is possible to lose one's professionalism dealing with low lifes and scum day after day, year after year. Chauvin is, without a doubt, responsible for Floyds death. When you make a prisoner not a threat anymore then he becomes your first priority. IF your cuffs are on him, you are responsible for him, his safety and how he is released or processed. Four or 5 police officers, one big prisoner in cuffs can be dealt with safely for all involved.