Man pleads not guilty to murder in wife's death, standoff in Chula Vista ABC 10News and last updated 2021-03-09 20:27:36-05 CHULA VISTA (CNS) - A man who allegedly killed his wife, then barricaded himself inside his Chula Vista home and engaged in a nearly 24-hour standoff with police, pleaded not guilty Tuesday to murder. John Partain, 63, is accused in the slaying of his wife of more than 30 years, 74-year-old Billie Jean Partain. According to the criminal complaint charging Partain with murder, a hammer was used in the killing, which allegedly occurred three days before he took part in a s...