It is a macabre choice to make - and almost unique to some inmates on Utah's death row: would you be injected with toxic chemicals, or shot in the heart? But, amid cries of outrage against the southwestern state bringing death by firing quad back into law, almost half of those due to die that way have picked the punishment themselves. Ron Lafferty, who slit the throats of his sister-in-law and her baby daughter in 1984, is one of three who has opted to die by the bullet. Two others in Utah's eight-strong death row have made the same choice,...