@skye Will also add this depressing point: if you are in the US and have to call 911 (don't, unless they are unconscious or injured to a degree they need immediate life support) *emphasize* that they are unconscious and/or immobile, and that it is a medical emergency.

If you just call 911, are "someone's flailing all around" there's a good (bad) chance the first responder will be an armed (and barely medically trained if medically trained at all) cop