An eight-hour training day with the $500,000, 19-passenger simulator burns through 800 gallons of propane. Firefighters tame 30-foot-high flames on the tarmac, extinguish engine fires, and storm the plane to rescue dummies from 300°F temperatures. (For added realism, the dummies plead, "Help me, help me! I'm on fire!") An instructor stationed nearby controls the flow of propane. Because propane is less flammable than jet fuel, cutting off the supply can kill the fire in a few seconds. At the end of the day, workers fold the plane down to one sixth its original width so that it fits onto a truck bed for its next destination.