BWI Rail Station is served by which Amtrak flagship service?
BWI Rail Station:  It is served by Amtrak intercity services (frequent "Northeast Regional" and "Acela Express" trains plus the daily "Vermonter" and "Palmetto") and MARC Penn Line regional rail service. Acela Express: The Acela Express ( ; colloquially abbreviated to Acela) is Amtrak's flagship service along the Northeast Corridor (NEC) in the Northeast United States between Washington, D.C. and Boston via 14 intermediate stops including Baltimore, Philadelphia, and New York City.
Acela Express