Opioids are responsible for more than 33,000 deaths a year, and rural America has been hit particularly hard. In 2006, the Centers for Disease Control and Prevention reported that, for the first time, drug overdose death rates in rural areas had surpassed those in big cities. Vets tend to live in rural and smaller metro areas. Roughly 1 in 12 civilian adults is a vet, but in some smaller metros that figure is as high as 1 in 5, according to housing website Trulia. In New York City and L.A., vets make up less than 5 percent of the population.