A former member of the Michigan Army National Guard has been arrested and charged with planning a mass shooting at a U.S. military base in Michigan on behalf of ISIS, according to the Justice Department. Ammar Abdulmajid-Mohamed Said, 19, of Melvindale, Michigan, was arrested on Thursday near the U.S. Army’s Tank-Automotive & Armaments Command facility at the Detroit Arsenal in Warren, where prosecutors said he had planned to help carry out the …