Oklahoma Army National Guardsmen prepare towed howitzers and UH-60 Black Hawk helicopters during slingload training and a live-fire range at Fort Sill, Okla., March 4, 2017. The guardsmen are assigned to the 1st Battalion, 160th Field Artillery Regiment, and the pilots and crew chiefs are assigned to Charlie Company, 1st Battalion, 244th Aviation Regiment. Oklahoma Army National Guard photo by Sgt. Bradley Cooney