A TRANSGENDER dad has been identified as the gunman who killed two people and critically injured three others at a high school ice hockey game. Robert Dorgan, 56, is accused of targeting members of his own family in the horror mass shooting after posting a chilling warning online about going “berserk”. Advertisement A gunman, reportedly dressed in women’s clothing, opened fire in the stands on Monday at a high school match in Pawtucket, Rhode Island. Four family members were shot, including a young girl, as well as a family friend before the shooter turned the gun on himself, cops said....