Over the course of my twenty-five-year career as a firefighter, I noticed that many promising rookies and probationary year firefighters made mistakes that sent them into a tailspin, ending their careers. Most of the time, their mistakes weren't really their fault. I remember thinking that they would have made it if only they had had a mentor or someone to show them the ropes, show them how to avoid the pitfalls and errors that doomed their efforts...