I managed to get that PC heritage unit leading westbound 21M! It had come into NJ with this same power consist on 20W but under the cover of darkness. I decided to go trackside and see what was running as I had a suspicion that the PC unit might go out on 21M and it did. 21M is seen headed west through the Valley Road grade crossing (LEHL MP 40) in Hillsborough (NJ) at 9:06 AM on Tuesday morning. NS's PC heritage was the leader with BNSF 3971 and BNSF 7353 as the trailing units. Not a bad photo for this dreary morning, eh? As a footnote to my good fortune, I also purchased not one but two Pick-6 lottery tickets for Thursday night's drawing.