The document provides guidance on conducting an effective size-up at a fire scene. It discusses using the COAL WAS WEALTH framework to systematically gather 13 key pieces of information about the Construction, Occupancy, Apparatus, Life hazard, Water supply, Auxiliary appliances, Street conditions, Weather, Exposures, Area of fire, and Time of fire. Conducting a thorough size-up is important for developing an appropriate strategy and tactical objectives to safely address the fire.