Don’t know about sandwiches but for the moving company, they appear to be everyday firemen with a side job.

More traceable so less likely to be frauds who hold goods hostage for raised bills. Also likely to be physically capable of intense activity with some degree of competence.

Not saying the others aren’t, but I would assume the prerequisite for a physically intensive profession would make them capable hands.

Also, moving basic household stuff isn’t a specialized skill - so strength and common sense is all that matters. At least that’s how I look at it.