Making its stop at the BWI Thurgood Marshall Airport Station is Amtrak Northeast Corridor train 185, heading to Washington DC's Union Station from New York's Penn Station. AMTK ACS-64 "Cities Sprinter" 618 leads this nine-car train, with another ACS-64, 636, on the rear. (Linthicum, Maryland – September 24, 2025). Ron Hawkins photograph
(So why didn't I photograph this train? It was hard to get this angle as I was deboarding it here.)