Physician Response Unit – We have this in East London where an advanced A&E Doctor goes out with an advanced paramenace in one of the HEMS cars.  They are there as a sort of “nomad GP” if you like.  But with lots of other skills and toys to bring to the ‘party’.  Amongst them is the “auto-pulse” which is an automatic CPR machine.  So, having these guys turn up at a cardiac arrest can significantly improve outcomes.