Working at work (I work as a firefighter)

An apartment on the eighth floor is burning. We are here, we turn. I in a full parade (helmet, fighting) handcuffs up from the 4th floor site. Suddenly the door to the apartment opens and a guy in a coward asks me the three most stupid questions I’ve ever heard from an adult.
Are you a firefighter?
Yes Yes Yes
What is Fire?
I – What do you think?
In the upper floors?
Well, then I was silent because I could not answer adequately because of the appearance in the background of the wife of this humanoid.