Night In New Haven. Making up the power for an overnight work train in the Parcel G Yard in New Haven, Connecticut, an Amtrak crew approaches AMTK 740 (GP38-3, Phase VII) with AMTK 539 (MP15AC). This yard is used to stage Amtrak power for various assignments on both the Northeast Corridor and Springfield line, and at any time, one can see almost any kind of unit on the Amtrak roster, both diesel and electric.