Motive Power.
Amtrak ACS-64 no. 663 (Siemens, 2012-2016) is leading train 91(8) into Trenton Transit Center while a trio of non-revenue diesels passes heading east. The three locomotives included AMTK 723 (EMD GP38-3, 1969), AMTK 721 (EMD GP38-3, 1967), and AMTK 572 (MPI GP15, 2004).