http://www.mcall.com/news/local/all-a1_4ge...ll=all-news-hed
[snip]
A PennDOT worker salting roads about 5:30 a.m. Tuesday saw a woman in dark clothes walk down a Bethlehem hill, pause at a tree along Hellertown Road near the Interstate 78 overpass, turn around and get on a bus.
Sidney Reph followed the woman's footprints in the snow, and beneath the tree found a tarp hiding an ammunition box with a combination lock.
He told police he ''got away as fast as possible'' because he thought it could be a bomb. Firefighters, police officers and bomb squad technicians secured the area while investigating the mysterious box with ''This is a game'' written on the front.
They eventually determined that the box was part of a treasure hunt in which players use coordinates and a Global Positioning System receiver, or GPS unit, to determine where hidden objects are.
[\snip]
The best part was the quote "This isn't something to be alarmed about. This is something people can have an absolute _blast_ doing.''
The police seem a little overzealous.