January 30, 2015 9:40 pm MBTA's Downtown Crossing Evacuated After Train's Motor Failure Creates Smoke US & World Videos 0:39 Police respond to incident in Whitinsville 2:39 American man awaits sentencing in Turks and Caicos ammo case 2:05 MIT monitors pair of opposing protests on campus 3:41 Cool air to linger over Boston into the weekend 2:28 Karen Read trial continues, jurors visit crime scene