(NEWSER) - Above the Hudson River west of Manhattan, where a helicopter and a light plane fatally collided on Saturday, a pilot can have as many as a dozen other aircraft to monitor at busy moments. Flight instructors describe the river corridor as dangerous and tunnel-like, and government is once again facing calls to step in. "It's the Wild West out there, totally unregulated, and no one knows where these pilots are," one official tells the New York Times. More»