English: A westbound Canadian Pacific freight train (right) waits on a passing siding at Bolton, Ontario on 23 May 2017 while another, eastbound one (left) passes by. The former is headed by CP locomotives 8627, 9615, 8629 & 8609 and the latter by CP locomotive 8800, with helper locomotive Union Pacific 5501 partway through the train (reason for "alien" locomotive so far from home line unknown). The track branching off to the right is an industrial siding.
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