A large Burlington Northern Santa Fe intermodal train climbs Tehachapi Loop at Walong, California, on March 8, 2001. The rear of the huge train is still exiting Tunnel 9, while a mid-train manned helper of two EMD SD40-2s crosses over its train on the loop above.
The EMD SD (special duty) series are a strong and reliable kind of locomotive which still serve America's rails today. They have proved themselves reliable by clocking in several million miles of freight service over several decades.
