A U.S. Marine, standing, teaches the functions of electronic counter measures during a train, advise and assist mission at the 1st Operational Kandak near Bost Airfield, Afghanistan, Nov. 21, 2017. The Marine is assigned to Task Force Southwest. The class teaches Afghan soldiers the proper use of improvised explosive device electronic counter measures and metal detectors. Marine Corps photo by Sgt. Justin T. Updegraff