John Lennon's killer faces his seventh parole hearing this week in Alden, N.Y., but few expect him to get it. Mark David Chapman, 57, is a serving a 20-years-to-life sentence for second-degree murder after gunning down Lennon on December 8, 1980, outside the Dakota apartment building where the former Beatle lived. Chapman, who asked Lennon for an autograph earlier that day, has been eligible for parole since 2000 and has been rejected six previous times. Lennon's widow Yoko Ono and his sons Julian and Sean have previously requested that Chapman been denied parole. Chapman is currently incarcerated in the Wende Correctional Facility, where he was moved in May after spending 30 years in the Attica Correctional Facility. Chapman is allowed to request parole every two years.