Sherman Volunteer Fire Department is wrapping up Fire Prevention Week by talking about outdoor fire safety. Intentional fires such as controlled burns or campfires require, in many cases, a burn permit from the town.  It's important to carefully examine the area where the fire is planned for, clearing an adequate area around the fire and have a water source available.  Any wind can cause an outdoor fire to spread quickly.  Gasoline engines require their own set of safety precautions.   Sherman firefighters say a lawn mower or other engine should never be left running where the exhaust is directed toward any combustibles such as dry leaves or grass.   Always store gasoline outside and never indoors near any ignition source such as a furnace or hot water heater.  It's always best to fill the tank when the engine and exhaust are cold and be sure to clean up any spilled gasoline before starting the engine.   If you do need to refill a tank after the engine has been running be sure to let it cool sufficiently as gasoline spilled onto a hot exhaust can cause a fire.