The goal is to convince the oral board that you can do the job before you get it. Stories demonstrate your experience. They tell the board that you not only know the answer to an oral board question, you have already lived it. There are over 101 topics to help you on every step of the hiring process. Check it out before you leave.
Stories are more than facts.
If you can light yourself on fire with enthusiasm and bring the excitement, emotional, the magic of the actual event in a story, the oral board with stand up, applaud and watch your ass burn. But, what you're really doing is auditioning for the part to be a firefighter, engineer, inspector or officer. Just like the part in a play. Do you know your part. I've been on over 175 oral boards.