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GLOSSIP v. GROSS Opinion of the Court

use of the particular protocol at issue in Baze supported our conclusion that this protocol did not violate the Eighth Amendment, we did not say that the converse was true, i.e., that other protocols or methods of execution are of doubtful constitutionality. That argument, if accepted, would hamper the adoption of new and potentially more humane methods of execution and would prevent States from adapting to changes in the availability of suitable drugs. Fourth, petitioners argue that difficulties with Oklahoma’s execution of Lockett and Arizona’s July 2014 execution of Joseph Wood establish that midazolam is sure or very likely to cause serious pain. We are not persuaded. Aside from the Lockett execution, 12 other executions have been conducted using the three-drug protocol at issue here, and those appear to have been conducted without any significant problems. See Brief for Respondents 32; Brief for State of Florida as Amicus Curiae 1. Moreover, Lockett was administered only 100 milligrams of midazolam, and Oklahoma’s investigation into that execution concluded that the difficulties were due primarily to the execution team’s inability to obtain an IV access site. And the Wood execution did not involve the protocol at issue here. Wood did not receive a single dose of 500 milligrams of midazolam; instead, he received fifteen 50-milligram doses over the span of two hours.8 Brief for Respondents —————— 8 The

principal dissent emphasizes Dr. Lubarsky’s testimony that it is irrelevant that Wood was administered the drug over a 2-hour period. Post, at 20. But Dr. Evans disagreed and testified that if a 750milligram dose “was spread out over a long period of time,” such as one hour (i.e., half the time at issue in the Wood execution), the drug might not be as effective as if it were administered all at once. Tr. 667. The principal dissent states that this “pronouncement was entirely unsupported,” post, at 20, n. 6, but it was supported by Dr. Evans’ expertise and decades of experience. And it would be unusual for an expert testifying on the stand to punctuate each sentence with citation to a