This tip led to David Hill, 34, who shared a home in Redondo Beach with Patrick Kearney, 37, a Hughes Aircraft engineer. Kearney and Hill were an odd couple. Hill was a 6-foot-2 high-school dropout from Texas, who had been discharged from the army because of a personality disorder. He couldn’t hold a job. Kearney was 5 feet 5, dark-haired and bright, some said he had an IQ of 180. His boss described him as a model employee.