article_snippet: Method of choice: Double murderer Ron Lafferty has chosen to die by firing squad .
article_snippet: Ron Lafferty, who slit the throats of Lafferty sister-in-law and her baby daughter in 1984, is one of three who has opted to die by the bullet.
highlights_snippet: One is Ron Lafferty, who killed his sister-in-law and her baby in 1984 .
  