SP's East Pleasanton Turn was descending Altamont Pass through Niles Canyon westbound led by a pair of boiler equipped SD9's kept in captive Bay area service for commuter train backup power.
A triclops SD60M leads the MRVSJ out of Niles Canyon on its way to Newark and San Jose. The train is about to pass through a wide load detector that protects tunnel 1 on the Oakland Sub.