NS PAX Sighting Near Reading

Saw some passenger cars head north out of Reading July 17 at 19:30. Inspection, dead head, or ? Saw them from a distance...

The SD45

Any names on the cars?
I heard NS has some private cars for the top execs, but they usually only get used to go to the Kentucky Derby.

NS. I didn't see the power, but it was a short train. High pitched nice sounding horn tho.