Dual Mode Under Wire. Amtrak P32AC-DM 705 led Train 848 to test ACSES modifications on Wednesday, October 13, 2021, seen passing through Westport, Connecticut over the Saugatuck River. These engines are normally found only on trains that cross Albany-Renssealer during some point in their trip to serve New York State, so Nutmeg State visit is quite rare. The train would go to New Haven, CT, and return to Albany-Rensselaer, NY later in the day.