Two fresh sightings of alleged sniper Eric Frein has resulted in more closed public schools in northern Pennsylvania and a shift in a massive manhunt to near where Mr. Frein went to high school and where he was a member of the high school rifle team. The pressing question of how a single man has outmaneuvered 1,000 trained law enforcement officers in the Pocono Mountains for over five weeks suggests that Frein has used a home-field advantage, long-term planning, and survival skills to resemble a wilderness ninja, a term some use to describe a rare breed of native scouts...