Don’t panic. Knowing what you need to do will help you with this step. Turn off the burners on the grill and, if you can safely get to it, the supply valve on your propane cylinder. If you can, remove the food from the grill. DO NOT try to put out a grill fire with water. This will make the flames more intense and spread the burning grease to a larger area. If you do not have a fire extinguisher handy, put baking soda, salt, or sand on the fire to smother the flames. Close the grill lid and vents to help starve the fire of oxygen. If the fire is still expanding or has reached the gas tank, evacuate the area immediately and call 911.