It needs a paramedic because fire fighters often need paramedics.
So if the small vehicle has a paramedic, you still need one for the big truck.
And if you have another vehicle, you need a bigger apparatus bay at the station and more beds and more staff times three shifts.
Finally, when the 911 call comes in there is not time to triage. The system is optimized for response time because people might die.
It needs a paramedic because fire fighters often need paramedics.
So if the small vehicle has a paramedic, you still need one for the big truck.
And if you have another vehicle, you need a bigger apparatus bay at the station and more beds and more staff times three shifts.
Finally, when the 911 call comes in there is not time to triage. The system is optimized for response time because people might die.