Brian Fanion says he and his wife Amy Fanion had been arguing about his retirement plans when she picked up his service weapon and shot herself. Investigators did not believe his story.
Police investigate one of their own when a detective becomes a suspect in the shooting death of his wife. "48 Hours" contributor Nikki Battiste reports.
U.S. officials say the wife of an active-duty Coast Guardsman was arrested earlier this week by federal immigration authorities inside the family residential section of the U.S. Naval Air Station at Key West, Florida, after she was flagged in a security check.
