A westbound Union Pacific grain train passes Martinez Siding, signaling that its climb up the east side of Cajon Pass is about done as Summit is just three miles ahead. This train is powered by six Union Pacific diesels: Dash 8-40C 9293, SD40-2 3704, SD40-2 3295, SD60M 6227, SD60M 6101 and C30-7 2423. (October 27, 1990)