A Christmas Box. NJ Transit 4120 (EMDF40PH-2CAT) sits in front of 4101 (GP40PH-2) at Hillburn Yard in Hillburn, New York on the afternoon of Friday, December 25, 2020. Both engines have been returned to passenger service after periods of absence, (re)expanding New Jersey Transit's fleet, but catching them together on Christmas was like receiving an extra gift. The "Class Unit" of PL42s, 4000, sits on the adjacent track.