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Capt. Nathan Sprague, 18th Aeromedical Evacuation Squadron flight nurse instructor, reviews mission data during a nighttime training mission Sept. 12, 2016, at Kadena Air Base, Japan. Sprague evaluated 18th AES aircrew’s performance in various medical and in-flight emergency procedures during a flight on a 909th Air Refueling Squadron KC-135 Stratotanker.