HUNTINGTON, W.Va. — From 2006 through 2014, more than 81 million painkiller pills were shipped to this city and surrounding rural Cabell County. The arrival of prescription opioids onto seemingly every block of Huntington, a city of about 46,000 people, augured the first wave of an overdose crisis. Heroin followed, then fentanyl. Residents remember Aug. 15, 2016, as the darkest day because on that afternoon and evening, 28 people overdosed in the city. But Huntington had shouldered collective trauma before. On Nov. 14, 1970, Southern Airways Flight 932 crashed into a hillside just outside Hunt…