South Carolina has killed death row inmate Brad Sigmon, 67, in the first firing squad execution in the U.S. in 15 years. According to the Death Penalty Information Center, Sigmon’s death marks the fourth firing squad execution in U.

A man convicted of a double murder is scheduled to be executed in South Carolina Friday night by firing squad - a method that has not been used in the United States in almost 15 years, and never in the state.

Brad Sigmon, who admitted to killing his ex-girlfriend's parents, said he chose to die by bullets because he considered the other choices offered by the state to be worse.