Alan Eugene Miller, a triple murderer, was executed in Alabama using nitrogen gas hypoxia, marking the second use of this controversial method in the U.S. Miller, 59, was convicted of killing three coworkers in a 1999 workplace shooting and spent eight minutes dying after the gas was administered. Witnesses reported that he exhibited violent spasms and struggled for breath during the execution, raising concerns about the method's humaneness. This follows the execution of Kenneth Smith earlier this year, who also experienced significant distress before his death by nitrogen gas. Critics, including human rights advocates, argue that this method is inhumane and akin to torture, as it replaces breathable air with pure nitrogen, leading to asphyxiation. Alabama plans to continue using nitrogen gas for future executions despite ongoing debates regarding its ethical implications.