I can't even think of things they regularly do that can be called heroic? I know they do some good stuff, but nothing that comes close to the level of "hero" in my opinion. They squirt water on hot stuff? Cool.
They also don’t have a history of killing black people at 2.5x their usual rate of killing people. (They also by and large don’t kill people, in fact they’ve killed so few people there doesn’t exist case law that prevents liability of a firefighter for killing a person. Unlike cops.)