A South Carolina man was executed by firing squad Friday — the first execution of its kind in the U.S. since 2010 and just the fourth firing squad execution since the death penalty resumed in this country 49 years ago. Brad Sigmon, 67, walked into the death chamber at 6:05 p.m. Friday, where he was strapped into a chair and had a target placed over his heart, South Carolina authorities said Friday evening. Sigmon had a hood placed over his head, and three Corrections Department volunteers armed