A fire breaks out in a residential neighborhood. A resident calls 911: "Fire at 1247 Elm Street." The fire department springs into action—loading equipment, routing trucks, coordinating response. They're the community's immune system against fire. But from the moment the call comes in until the fire truck arrives, the department operates blind. Did the fire spread to the neighboring house? Did residents evacuate? Is it an electrical fire or a kitchen grease fire requiring dif