Pre hospital care is a field of work where you do it, well in a field, bedroom, boardroom, on the streets or up on scaffolding, anywhere it is needed. Working at height is awkward with the equipment needed both for the medical and fire service staff. A bottle of medical oxygen pressurised to 40 ish PSI is a danger to all if it slides and gets damaged.
The cutting equipment is heavy enought to kill if it fell. This causes a dangerous working environment at the scene.
Then there is the blue light response driving. How many times have you (if you drive) had blue light head towards you from the front or back and panicked, when people panic they do stupid and dangerous things. And this make response driving on blue lights a highly dangerous practice. Although response drivers are highly trained to lower the dangers, it is still very risky.