A Gray man was killed Monday morning in a snowmobile accident in Windham. The first snowmobile fatality of 2016-17 winter season, it occurred around 10:20 a.m. on a trail that runs along power lines from Falmouth Road to Route 302. Angus McDuffie, 44, of Dutton Hill Road was pronounced dead at the scene after the snowmobile he was driving got stuck while crossing a small brook and he was ejected from the machine, said Sgt.