Massachusetts March 21, 2022 7:01 pm MBTA Rolls Out Renovated Mattapan Trolley A multimillion dollar project on the MBTA’s Mattapan Trolley that had been delayed has finally made progress. US & World Videos 1:51 Flight headed to Boston averts runway collision in DC 1:29 U-Haul used in attempted ATM theft in Dorchester 0:18 Firefighters battle blaze in Chelsea 2:06 Boston-bound flight averts runway collision 2:08 FBI warns of increased terrorism threats at Pride events