South Carolina National Guard Soldiers assigned to Detachment 1, Company B, 2-238th General Support Aviation Battalion, perform high-altitude flight operations, aboard of a CH-47F Chinook heavy-lift cargo helicopter in proximity of Vail, Colorado, Mar. 09, 2017. The crew was attending a week-long power-management course at the High-Altitude ARNG Aviation Training Site (HAATS) located near Eagle, Colorado. ( Army National Guard photo by Staff Sgt. Roberto Di Giovine)

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