A convicted double murderer is set to die by firing squad in South Carolina on Friday — the first execution of its kind in the US in 15 years. Brad Sigmon, 67, personally requested the unusual punishment after fearing the electric chair would “burn and cook him alive,

Brad Sigmon, 67, convicted of murdering his ex-girlfriend's parents in 2001, is scheduled to be executed on March 7.

Only three people have been executed by firing squad in the U.S. since the death penalty was reinstated in 1976.