Not a Drill

A Jack Reacher short story, published exclusively as an ebook: now also available in the new Reacher short story collection, No Middle Name.
The tiny town of Naismith has nothing going for it - except the start of a wilderness trail through Maine's ancient forests. But one day the trail is suddenly closed by county police.
No reason is given. Rumours start - is there something in the woods that no one must see? That no one must even know about?
Then Jack Reacher drifts into town. What does he make of the Do Not Enter tape strung between the trees?