My first adventure into firefighting was when my sim met his current love interest when he had a fire at his home. Being a daredevil, he put the fire out himself and met the firefighter, Marie, who happens to be the only non incredibilty ugly sim in Twinbrook.
Anyway, they got together on a Friday and she moves in. I thought, great...I can now play the fireman's career. She had no skills, so I sent her around town getting athletic, handy and cooking classes as well as getting the books so she would have some reading material. She was up to lvl 4 handy, lvl 3 athletic when she returned to work on Monday. The first emergency was a small house fire. (Why does the fire truck have the same speed as the Twizy??) I love the dramatic, alarm, music while you're on the way to the fire. Really gets the adrenlaine to rushing there.
After all this, she rushes into the house where there is a small fire in a kitchen. She puts out the fire and instead of getting an A, the music continues, 2 adult sims inside and 2 adult sims outside in the yard continue to freak-out.
I look for about 3 sim hours, til she's down to a D grade and still there is no fire. She watches a little tv while all this is going on. Never did find any more fire, so I guess there was a glitch. Not real impressed with the firefighter career so far.
I got so disgusted I quit without saving.
She would probably make a real good PI.