Army Sgt. Lopez, right, observes as soldiers transport a simulated casualty on a stretcher to be evacuated by a UH-60 Black Hawk helicopter at a tactical combat casualty care lane at Camp Buehring, Kuwait, Feb. 23, 2016. Lopez is a crew chief assigned to Company F, 2nd Battalion, 238th Aviation Regiment, 40th Combat Aviation Brigade. Army photo by Staff Sgt. Ian M. Kummer