What's a boilermaker?

The question was asked and I tried to explain 

Now sit your ass down and I'll tell you again 

More versatile than any and all other trades

We don't ask for medals nor any parades

A boiler goes down while you are unaware 

The call comes to us to make the repair 

Entering the lair at plus 150 degrees 

We work through the night on our hands and our knees 

We keep our hoods down and embrace the suck

It's just what we do to earn the almighty buck 

No matter the difficulty we're no damn quitters

Ain't no bitchin either... were no pussy ass fitters

Keeping your power plant running throughout the year 

Fixing mistakes by some college grad engineer 

A combination of all other crafts we stand tall

We heal our wounds with a bit of alcohol 

Skilled, willing and ready. No problem, no fear

You can stay cozy at home so long as we are here 

Now there's no reason you should ever forget 

Next to a boilermaker.... you really ain't shit