ARLINGTON — Where did it all go off the tracks? In the late 1970s, what was then a blue-collar suburb saw plans to extend the MBTA Red Line under its streets, providing an easy link to Cambridge, Somerville, and Boston. The federal government had money to spend, and the massive effort to extend th e subway […] The post A changed Arlington reconsiders the Red Line appeared first on Boston.com. ...read more read less