A new chapter in Amtrak history is written as the first of 70 new Siemens electric locomotives entered service along the Northeast Corridor. The event featured a plethora of media representatives and one particular Amtrak fan: US Vice-President Joe Biden, who traveled on the Northeast Corridor during his years as a US Senator. The new locomotives will replace older vehicles as they enter revenue service in the coming weeks, with full delivery set for 2015.