Alleged cop killer Christopher Jordan Dorner published an 11-page manifesto, apparently seeking to explain or justify murder. Dorner, a former police officer and trained marksman, is now being hunted by police in Los Angeles and across Southern California. They say he's already taken three lives, including that of the daughter of a police chief he felt had wronged him. Targeting the children and spouses of officers is one of many specific threats Dorner makes.