The gunman who killed two people at a youth hockey game in Rhode Island appeared to post ominous warnings in the days before the deadly shooting. An online profile that appears to belong to Robert Dorgan, 56, who also went by the name 'Roberta Esposito', shared an eerie video of a woman running on a treadmill while loading ammunition magazines into a handgun and aiming. In another post on X, a profile for 'Roberta Dorgano' threatened to go 'BERSERK' while defending transgender Congresswoman Sarah McBride. 'Keep bashing us,' they wrote Sunday. 'But do not wonder why we Go BESERK.' Just hours after the shooting, a woman who claimed to be Dorgan's daughter claimed the gunman 'has mental health issues'. 'He shot my family, and he's dead now,' the woman told WCVB. Dorgan's wife Rhonda, who was reportedly killed in the shooting, claimed on divorce documents that her husband displayed 'narcissistic + personality disorder traits'. Pawtucket Police Chief Tina Goncalves said Monday night …