Army 1st Lt. Mercy Ukpe, left, and Army Sgt. Shawn Wilson provide medical care to a simulated casualty during a mass casualty exercise at the Joint Readiness Training Center, Fort Polk, La., July 16, 2016. Ukpe and Wilson are assigned to the New York Army National Guard's Headquarters Company, 1st Battalion 69th Infantry. Army National Guard photo by Sgt. Harley Jelis