(NPR) – Tennessee is gearing up for an execution on Tuesday that experts say would likely mark the first time a man has been put to death with a working defibrillator in his chest.

Gov. Bill Lee declined Monday to grant a reprieve, clearing the way for Byron Black’s execution after a legal battle and ongoing uncertainty about whether the implantable cardioverter-defibrillator will shock his heart when the lethal drug takes effect. (Read More)