Coronavirus March 9, 2021 7:06 am ‘Last Mile' to Deliver Second Dose Last Mile Vaccine Delivery is returning to Chelsea and Quincy to administer the second dose of the Moderna COVID-19 vaccine at residents’ homes. US & World Videos 1:29 Sumner Tunnel in Boston to close for one month 2:17 Testimony underway in Karen Read murder trial 2:03 Mass. school officials threaten to suspend student protesters 2:13 Karen Read trial Day 6: Witness testimony resumes 4:02 ‘To Catch a Contractor' series leading to changes