Massad Ayoob did an excellent write-up many years ago for American Handgunner. Lots of lessons learned for the cops, and recognition for an armed citizen who managed to dent the forehead of one of the killers with a .38 S&W round from a surplus Enfield.
Both killers wound up committing suicide - Twinning at the scene of a hostage situation, and Davis in his prison cell many years later.
http://www.chp.ca.gov/memorial/newhall.html