The Sept. 12 ambush outside the Blooming Grove state

Now that it's getting colder and the leaves are starting to fall, the advantage could soon shift to law enforcement, experts say. But the challenge remains no less daunting as police track an armed suspect — already accused of killing one officer and injuring another — in a wilderness that offers plenty of places to hide."I wish people could understand how hard it is to find people in the woods," said Patrick Patten, who helped track Eric Rudolph, the 1996 Atlanta Olympics bomber who eluded authorities for years in the woods of western North Carolina. "It truly is a massive undertaking." The Sept. 12 ambush outside the Blooming Grove state police barracks killed Cpl. Bryon Dickson, seriously wounded Trooper Alex Douglass and touched off a manhunt whose scale and intensity is unrivaled in modern Pennsylvania history.