On death and dying; a good death

I have written some about having A good death. Sometimes it means advocating for loved ones. However, in the event of an unexpected incident, before EMS gets there, what can a stranger do? (We don't call them accidents, as they can be prevented.) Our First Responders are there to help. They are trained to calm, provide care, and do what they can. It occurred to me that many arrive upon a scene