Tennessee Pass Update The latest on when and why this Colorado railroad landmark will close. NJ Transit's Critical Encounters A commuter railroad helps crews cope with deadly accidents. BNSF's Scenic and Busy Thayer Sub. From the Ozarks to the Delta on a busy section of the old Frisco. Air Brakes Simplified. A short course in understanding air brakes. Railfanning 101. Our features editor goes railfanning. RN405 Pentrex P.O. Box 94911 Pasadena, CA 91109-4911