Legal Massachusetts gun owner protects self, wife against troubled man. On today's Hero of the Day, Cam Edwards tells the story of Ronald Duval in Wilbraham, Mass. Duval fatally shot David Gatti, a 29-year-old schizophrenic with severe depression, when he showed up at Duval's condo in a state of incoherency. Gatti entered the residence, threatening the owner with a broken wine glass. When Duval backed away toward the upstairs where his wife was showering at the time, Gatti followed though he had been warned that his victim had a gun. Duval first shot him in the leg. When Gatti proceeded up the stairs, Duval shot him fatally in the chest to defend himself and his wife.