I keep hearing how states are running out of drugs to execute people.  Other than to impress the yokels, why would they need the elaborate set-up of tubes and vials and meters, etc. as well as up to five different drugs?  Every state has a confiscated stash of Heroin and last I heard Methadone and Morphine were in good supply.  I'm sure that any condemned person would prefer to drift away on a Morphine cloud rather than provide the show of a screw-up with the Rube-Goldberg contraption in use now.