My job is to take a set of fire alarm system blueprints, scribble all over them, and write "as built" in red pen across the top.
Periodically I meet with fire marshalls to show them my awesome scribbles, they comment about how it looks just like the building we're standing in, and we exchange autographs.
Sometimes my job is to hide in a back room pressing buttons while the new guy wanders around making a bunch of ear piercing noise and ticking everyone off. Occasionally I have to get on a mic and tell people not to worry about the new guy, he's just testing the fire alarm.
Now and then my job is to return calls at 3AM and try everything I can to avoid driving an hour away to press a button.
More than anything, my job is to make sure when us idiots try to burn our houses down, we have an audience ASAP.