Amtrak's Northeast line, MARC resume service after Baltimore fire / Amtrak sets record with 15% increase in ridership versus last year / Amtrak Says Service Between New York and New Haven Will Return in Afternoon / Amtrak train options will now show up when you Google flights / Amtrak is set to carry more passengers than ever before this year / Amtrak warns high temperatures in the Northeast will cause delays / Amtrak service disruptions stretch into second day / Amtrak resumes service after disruptions along Northeast corridor / Amtrak's long-distance Auto Train is picking up more passengers / Amtrak's ridership is touching record highs