SP helper engineer and conductor make their way off their trailing unit. The BKDOU they're helping has suffered some sort of failure near the head end, and the conductor (closest to us) will walk toward the lead locomotives to see if he can help. Ilmon, CA, Tehachapi Pass. 3/88. Kodachrome 25.
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.
