sentences:  Many units conduct Annual Training at Camp Grayling, Michigan.On May 4, 1970, Guard units infamously opened fire onto a crowd of both Vietnam War protestors and simple bystanders on the campus of Kent State University, killing four and wounding nine others, an event known as the Kent State shootings.The President's Commission on Campus Unrest concluded that the Guard's actions were "unnecessary, unwarranted, and inexcusable."