| A solid set of SD40-2s leads an eastbound stack train downhill into the siding at Bison, under stormy autumn skies. |  |
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The extended platforms of the well cars frame the mountains of Marias Pass. |
| A short time later, a westbound grain train thunders uphill on the main. |  |
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The C44s roar by in Run 8, into the storm. |
| A pair of unmanned, radio controlled helpers brings up the rear of the grain train. |  |
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The following day, we begin a chase of the Empire Builder at Java Creek Trestle. |
| Having crested Marias Pass, the Builder coasts through Bison. |  |
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...and rolls downhill towards the clearer skies of eastern Montana. |
| Approaching Glacier Park Station, the Empire Builder crosses Midvale Creek Trestle. A few months later, strong winds blew several containers from a stack train here, forcing BNSF to install an ugly wind fence on the north side of the structure. |  |
