No they don't, thats not what they do at all. That is the realm of the medical control and the reciveing facility, not 911 in any way shape or form.diverDano:I can't believe nobody has said the "real" reason to call 911 first.(or the authority in whatever locale) The reason you are supposed to call 911 first, trauma related emergency, or barotrauma, is because if there are several chambers in the area, not all of them will be manned or "hot". 911 has this information, and will act accordingly, sending patients to the appropriate care facility.