article_snippet.sent: In 2013 and 2014, Tennessee tried to jump-start the process with a new one-drug lethal injection method and the reinstatement of the electric chair as a backup.
article_snippet.sent: Above, electrocution has been designated as a backup method .
article_snippet.sent: Tennessee last year reinstated electrocution as an alternative if lethal injection drugs are unavailable or a court rules the procedure unconstitutional.
article_snippet.sent: Utah last month reinstated the firing squad as a backup method if Utah can't obtain lethal injection drugs.
article_snippet.sent: In Oklahoma, lawmakers approved nitrogen gas as a backup execution method.