The term 'FAST Amtrak Service' refers to the Acela Express, a high-speed rail service operated by Amtrak in the Northeast Corridor of the United States. The Acela Express is the only high-speed rail service in the United States and offers passengers a faster and more comfortable journey than traditional Amtrak services. It operates between Washington, D.C., and Boston, Massachusetts, with stops in Baltimore, Philadelphia, New York City, and other cities along the way. The Acela Express is a popular choice for travelers looking for a FAST and convenient way to travel between major cities in the Northeast.