Brad Sigmon will be the first person executed by firing squad in South Carolina and the oldest person ever put to death in the state.

- This undated photo provided by the South Carolina Department of Corrections shows the state's death chamber in Columbia, S.C., including the electric chair, right, and a firing squad chair, left. (South Carolina Department of Corrections via AP,

If Sigmon's execution moves forward, he will become the first inmate in South Carolina executed by firing squad in modern history and the fourth in the U.S. since 1977.