Under capitalism, a lot of the time, highly dangerous jobs are also highly paid. Kind of a balance that the individual decides to engage with. Same idea behind getting an advanced degree in STEM or law. I think of my job by example, I’m a power plant operator at a large combined cycle plant. No fucking shot I’d be doing this if the pay wasn’t good. I’m around explosive and deadly hot shit all day.
This is a good answer and I would just like to mention the democratic / assembly nature of communism. If you have an assembly where the community has to decide “who will do this tough / dangerous job?” and someone steps up to do it, they will get the respect of the community (and probably some sexual interest from the sex(es) of their choice tbh). The human-nature aspect is important, as we are social animals. We already have this going on already, like why do game crackers and pirate groups do what they do, at significant personal danger? Reputation, among other things. That goes back to the warez scene and even to phreakers and whoever else was hacking before them.
It could also be that a certain individual enjoys the danger or difficulty of the job.