I don't think anyone is going to tell you that blowing a stoplight is OK. If you see the flashing lights warning of a controlled intersection ahead, you ought to be thinking "slow down" because you may have a change in the light. If you're going so fast that you would have to brake pretty hard to stop, you're probably going too fast. Figure that traffic signals give you about 3-4 seconds at the posted limit to go from "green" to "red" so if you're going faster than the limit, your braking distance will be that much LONGER.
When driving around town, I used to basically drive like the stereotypical "Granny" because I really dislike having to do near-panic hard stops when someone is in the back. My partners knew that if I ever yelled "Hard Stop!" it meant I'm about to do near threshold-braking and stop that ambulance in as short a distance as possible, given the weight of those things. Everything in the back might just get thrown... Given a choice between driving around in a somewhat speedy manner and potentially throwing my partner (and patient) around the back of the ambulance and driving like "Granny" and giving them a nice smooth ride even while dealing with "fast" traffic lights, you can pretty much guess which one I'm going to choose.
Here's the reality: since ambulances are NOT usually listed in as being driven by YOU, any cites (especially red light camera cites) will usually be sent to the company (your boss) who will then figure out which ambulance it was, which crew was on, who was driving... Now if you're actually pulled over, then things can get more interesting, but suffice it to say that your boss would find out about that anyway.
Your partner or patient could also complain to your boss about the event too.