United States December 11, 2018 5:26 pm Checking Natural Gas Systems in Merrimack Valley Abbey Niezgoda reports from the statehouse, where Columbia Gas is nearing a self-imposed Dec. 16 deadline to address its problems which led to explosions in the Merrimack Valley in September. US & World Videos 3:17 Northeastern's graduation disrupted by 23-year-old who was then detained by police 2:37 Southbridge mom claims photo shows male school admin peeping in girl's bathroom 1:56 20-year-old killed, teen critically hurt in Northbridge double stabbing 1:50 Man found shot to death in Taunton shed 1:43 Authorities respond to incident in Northbridge