A 70-year-old Massachusetts man allegedly tried to drown an injured 21-year-old during a violent clash over a jet ski at a community lake boat ramp in a chaotic, caught-on-camera brawl. Steven Dana is accused of attempted murder, strangulation, and assault and battery on a disabled person for the alleged attack on Matthew Duffy at Lake Maspenock’s Sandy Beach in Hopkinton, Mass., on Wednesday. Duffy and his friends were using the boat ramp with their jet ski when Dana, a resident on the lake,