my fire dept sets up rehab and we run it ourselves the ambulance is on standby only for transport. the most important thing is to monitor the firefighter. make sure fluids are replaced and not just with water must give eloctrolite replacement as well. make sure they are cooled down/warmed up. set up rehab as far from the hot zone as possible like across the street and only 1 way in and one way outso the firefighter cannot sneak away. also you need good accountability as to who comes in and who goes out. i suggest tagging in and out just like goin in a building.