Just about everyone will find that there are the official rules in EMS – and then there are the unwritten rules. They’re often more helpful to know than the stuff you learn in class. For those EMTs or medics who are new on the job and want a jump on these real-world rules, my guest on this show wrote a column for Firehouse.com about them. Gary Ludwig has four decades of experience in the fire service. He’s currently chief of the Champaign, Illinois fire department, and he's responded to an estimated 25,000 fire, rescue and EMS calls during his career.