What happened ? Authorities on Tuesday revealed chilling details about the moments before a transgender gunman opened fire inside a Rhode Island hockey arena, describing what police called a "very targeted" attack in which a father methodically approached his family members in the bleachers and shot them one by one during his son’s senior night game. Robert Dorgan, 56, opened fire Monday inside the Dennis M. Lynch Arena in Pawtucket during a hockey game between Coventry and Blackstone Valley schools, killing his ex-wife Rhonda Dorgan and son Aidan Dorgan, before fatally shooting himself, according to Pawtucket Police Chief Tina Goncalves.