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Seaboard System train 665 has engines 6740, 5615, 6271, and 533. The train is pulling to a stop at Monroe, NC on April 25, 1986 to make a set out in the yard. That is the branchline to Charlotte swinging off to the right. The line that continues almost due west, goes to Abbeville.
The units are shoving the cars for set out into the yard.
A few minutes later the units come out of the yard and recouple to their train. Disk 128