No other railroad in North America other than UP could put this combo together. UP GP30B is mated up with an Omaha built GP20B and an SDP35, parked at Argo Yard, Seattle, waiting to be attached to a Portland bound freight. UP only owned its main from Argo to Black River Jct. in south Seattle, then traveled on joint MILW trackage to Tacoma before using trackage rights on BN to Portland.