Lance Cpl. Kevin S. Millican stands security during casualty evacuation drills at Fort Stewart, S.C., Feb. 25, 2016. During the exercise, Marines trained in events such as casualty evacuation, assault support missions and aerial refueling, proving the Marine Air-Ground Task Force is a highly effective combat force. Millican is a rifleman with 3rd Battalion, 6th Marine Regiment. - Lance Cpl. Kevin S. Millican stands security during casualty evacuation drills at Fort Stewart, S.C., Feb. 25, 2016. During the exercise, Marines trained in events such as casualty evacuation, assault support missions and aerial refueling, proving the Marine Air-Ground Task Force is a highly effective combat force. Millican is a rifleman with 3rd Battalion, 6th Marine Regiment.