wannabeliketv

I know Grady EMS does the 911 in Atlanta and Atlanta Fire Rescue has ALS engines. My question is how is the relationship between Grady and Atlanta fire? on ALS calls who is in charge Fire or Grady? In some communities in my area that have hospital based ambulances, the fire department usually arrives on scene first does the interventions then tells the ambulance to transport and if the ALS fire unit feels the patient may deteriorate they ride in the ambulance with the paramedics and run the call all the way to the hospital. Is the Grady and AFRD relationship anything like that?