order, so no one knows who is getting the live round and who is getting the blank. >> woodruff: andrew novak know there are 32 states where the death penalty is legal. we know that utah would become the only state along with okeechobee where the -- along with oklahoma, where the back-up would be the firing scad. two other states have hanging. and five more states use the electric chair, in addition to oak hoe ma, where it's either/or. >> why is there so much concern about these lethal injections? >> sure. i think the lethal injection has shown itself to be for a lot of reasons the most commonly used form of execution in the united states, but with the shortage of drugs from the pharmaceuticals and their distributors, we're seeing some states take a second look at their method of execution. that also includes the gas chamber. there's a gas chamber bill proceeding in oklahoma. all of these methods of execution have their concerns. they're not 100% liable. >> woodruff: the firing squad and... >> lethal injection, we've seen some cases botched in the last year or two as states experiment with ne