The Danbury Fire Department had to rescue some lost hikers at Tarrywile Park last night.  The hikers were rescued and brought to safety, but firefighters are urging people to take some steps to make things safer when enjoying the outdoors.  Most cellphones have a "Where am I?" type-button and hikers should know how to use it and how to send it to someone.  If you get lost or disoriented, fire officials say the most important part is to stay calm and call 911, stay in one place and conserve cellphone battery power.