A South Carolina death row inmate has chosen to be executed by a firing squad, which would make him only the fourth inmate in the U.S. to die by this execution method.Brad Sigmon, 67, who is scheduled to be killed on March 7, informed state officials on Friday that he wishes to die by firing squad rather than by lethal injection or the electric chair, citing, in part, the prolonged suffering the three inmates previously executed in the state had faced when they were killed by lethal injection.Sigmon was the first South Carolina inmate to choose a firing squad. Only










