Army Spc. Michael Keeling, left, demonstrates to Bulgarian soldiers how to insert a needle into the arm of mock patient Army Sgt. Lyndon James Navarrete during a tactical combat casualty care class in Kandahar, Afghanistan, April 17, 2018. Keeling and Navarrete are combat medics assigned to the 4th Infantry Division’s Company C, 704th Brigade Support Battalion, 2nd Infantry Brigade Combat Team. Army photo by Staff Sgt. Neysa Canfield