A nurse returning from work discovered an intruder armed with a hammer in her home and strangled him with her bare hands, police said. Susan Kuhnhausen, 51, ran to a neighbor's house after the confrontation Wednesday night. Police found the body of Edward Dalton Haffey 59, a convicted felon with a long police record. Police said there was no obvious sign of forced entry at the house when Kuhnhausen, an emergency room nurse at Providence Portland Medical Center, got home from work shortly after 6 p.m. Under Oregon law people can use reasonable deadly force when defending themselves against an...