Lt. Col. Kevin Jarrard believes those wondering whether the Islamic State’s reach could extend into middle America should remember or learn what happened in Beslan, Russia, in September 2004. “Every American ought to know that (city’s) name,” said the Riverside Military Academy commandant, who served with the Marines in Iraq twice in regions with opposing sectarian majorities. “That’s what’s coming, and anybody who thinks differently should just read history,” he said.