The EMT’S are responsible for waiting 20 minutes before taking him to the hospital. Be it firemen who showd up or otherwise.
If those first two fire personnel who showed up were in fact firefighters, they couldn’t transport the offender to the hospital because they would have come to the scene in a fire truck. Where would they put him?
From what I gather from the pole camera, they were waiting on an actual ambulance manned with paramedics to arrive. As for the first two not rendering aid, its possible they were informed by the officers that the offender was under the influence of some substance and was combative, and it’s possible the officers were reluctant to uncuff the suspect. I looked like the two fire guys had a monitor, and one appeared to have a blood pressure cuff at the ready to check the subject. This is all supposition on my part.