Merrimack Valley February 26, 2020 6:58 pm Whistleblower Reacts to Federal Charges Against Columbia Gas A whistleblower says he warned his company of potential problems before the Merrimack Valley gas explosions. US & World Videos 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 0:49 Bowling alley reopens 6 months after mass shootings in Lewiston, Maine 2:27 Mother speaks out after school shooting threat in Milton