Usual practice in the days before you "snowflakers" was standard trains arrived on the loop and Turbos went to Tks. 23 & 24.
Standards unl;oaded, went around the loop and through the washer, then into the East Yard. Long trains had to be split to fit, and there was some switching in the event of replacement food cars or bad orders.
One evening, Amtrak President Paul Resitrup was meeting his wife who was arriving on #64. Since the train was late, I asked him if there was anything that he would like to see while he waited. The answer was that he would like to ride around the loop, so we put him with the yard crew that was looping a consist with an S-motor. He said that he enjoyed it, especially since he had not ridden an S-motor before.