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美国印第安纳州阿特伯里营，美国陆军第158航空团第7营一架 UH-60Q 直升机在 Vibrant Response 11 演习中进行飞行前检查。（A U.S. Army aircrew from the 7th Battalion, 158th Aviation Regiment conducts pre-flight checks aboard a UH-60 Blackhawk in order to be ready to leave at a moment's notice for a medical evacuation mission during Exercise Vibrant Response at Camp Atterbury, Ind., Aug. 19, 2011. Vibrant Response is the largest chemical, biological, radiological and nuclear (CBRN) response exercise designed to prepare expeditionary units focused on responding to domestic CBRN incidents.）

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