All three states planning lethal injections this week refuse to say where they get their drugs, or if they are tested. Nine executions nationwide have been stayed or postponed since late April, when Oklahoma inmate Clayton Lockett's vein collapsed just as the drug began flowing into his arm. Lockett's punishment was halted, but he died of a heart attack.
Marcus Wellons is scheduled to die Tuesday night in Georgia, followed six hours later by John Winfield in Missouri. John Ruthell Henry's execution is scheduled for Wednesday night in Florida.