February 18, 2019 10:47 am Community Mourns Teen Killed in Snowmobile Crash The Amesbury High School community mourns the loss of Troy Marden, who was killed in a snowmobile accident over the weekend. US & World Videos 4:17 Police presence grows at pro-Palestinian encampment at Northeastern 5:39 Billerica police sergeant hit and killed by excavator during construction detail 2:31 Celtics preparing for pivotal Game 3 against Heat in Miami 2:37 Quincy detective resigns amid allegations of ‘unwelcome, sexually explicit conduct' 4:07 Officer hit and killed while working construction detail in Billerica, authorities say