Attendees at the Green Line Extension meeting at the Holiday Inn last week viewed a 3D presentation depicting the Green Line route from Lechmere to Union Square stations. – Photos by Douglas Yu

By Douglas Yu

Residents who attended the first Green Line extension project meeting this year are the lucky ones because they are the first “passengers” in the world to take the extended Green Line train from Lechmere to Union Square, even if it was through 3D animation.