Power is lined up and ready to roll next to the Argo Yard tower and offices in Seattle. UP SD40 3092 leads a trio followed by a pair of SD40-2s. The 3092 was built in August 1971, a fairly late version of a straight SD40. A trio of NW2s await their switching orders for a day's work. They had plenty of switching work in the yard as well as south Seattle industries and parts of the waterfront.