The final cache location is on private property. The owners are occasional cachers and don't mind you stopping. They do own a dog (boxer) that may bark at you, but will not bite. Please do not block the driveway and do not find after dark.
To complete this game, you will need to find the three correct caches: one person, one place, and one weapon. Each correct cache will give you two numbers to be plugged into a set of coordinates to give you the location of this, the final cache.
The location of this cache can be found at:
N 43 49.A6C
W 084 22.D5F