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GLOSSIP v. GROSS Opinion of the Court

midazolam for petitioners, and Dr. Roswell Evans, a doctor of pharmacy, provided expert testimony for respondents. After reviewing the evidence, the District Court issued an oral ruling denying the motion for a preliminary injunction. The District Court first rejected petitioners’ challenge under Daubert v. Merrell Dow Pharmaceuticals, Inc., 509 U. S. 579 (1993), to the testimony of Dr. Evans. It concluded that Dr. Evans, the Dean of Auburn University’s School of Pharmacy, was well qualified to testify about midazolam’s properties and that he offered reliable testimony. The District Court then held that petitioners failed to establish a likelihood of success on the merits of their claim that the use of midazolam violates the Eighth Amendment. The court provided two independent reasons for this conclusion. First, the court held that petitioners failed to identify a known and available method of execution that presented a substantially less severe risk of pain than the method that the State proposed to use. Second, the court found that petitioners failed to prove that Oklahoma’s protocol “presents a risk that is ‘sure or very likely to cause serious illness and needless suffering,’ amounting to ‘an objectively intolerable risk of harm.’ ” App. 96 (quoting Baze, 553 U. S., at 50). The court emphasized that the Oklahoma protocol featured numerous safeguards, including the establishment of two IV access sites, confirmation of the viability of those sites, and monitoring of the offender’s level of consciousness throughout the procedure. The District Court supported its decision with findings of fact about midazolam. It found that a 500-milligram dose of midazolam “would make it a virtual certainty that any individual will be at a sufficient level of unconsciousness to resist the noxious stimuli which could occur from the application of the second and third drugs.” App. 77. Indeed, it found that a 500-milligram dose alone would likely cause death by respiratory arrest within 30 minutes