plymouth 400 September 4, 2021 11:23 pm Plymouth 400 Celebrations Underway A year later due to the pandemic, Plymouth celebrates its founding 400 years earlier. 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