Never leave a fire unattended and make sure you completely extinguish the fire when you're done. Drench the fire with water and stir the ashes unit cold.
When burning yard waste, follow local ordinances. Avoid burning in windy conditions, and keep a shovel, water, and fire retardant nearby to keep fires in check.
Play it safe when using fueled lanterns, heaters, and stoves. Lighting and heating devices should be cool before refueling. Keep flammable liquids and fuel away from appliances.
Never discard cigarettes, matches, and smoking materials from moving vehicles, or anywhere on park grounds. Completely extinguish cigarettes before disposing of them.
Source; National Geographic