As Tennessee eyes a wave of executions, attorneys for 33 death row inmates are challenging the three-drug combination in lethal injections. A lawsuit filed yesterday in Davidson County Chancery Court claims these drugs haven’t been used yet in Tennessee but present a substantial risk of serious and severe pain and suffering and were used in botched executions in other states. The lawsuit could delay one man’s August 9, 2018 execution and sidetrack eight proposed executions requested before June by Attorney General Herbert Slatery, who has said it’s uncertain whether officials can get lethal injection chemicals after that. In a previous filing, Slatery argued the U.S. Supreme Court and other federal appeals courts have rejected constitutional challenges to using midazolam as the first drug in a three-drug combination. The last execution held in Tennessee was back in 2009.