The Patriot Corridor between Ayer, Massachusetts and Mechanicville, New York is Norfolk Southern's access to the Boston market. Run as Pan Am Southern, the line was refurbished and developed jointly by NS and Guilford Transportation. We'll see the daily pig trains, usually with NS power, coal trains with NS, BNSF, Providence & Worcester and UP power, and Pan Am trains with both the old orange and gray paint, and the new dark blue paint scheme. Narration on/off. Dolby 2.0 audio.