Midwest health officials worried this would happen. It’s why they brought together a tri-state coalition – Ohio, Indiana and Kentucky – to talk about the dangers, and it’s why they issued a stern, desperate warning last month to first responders and addiction counselors who patrol the front lines of the opioid war every day. They said the situation was “dire.” One Ohio coroner told users they were “literally gambling” with their lives. But their public plea could not prevent the heroin on their streets from being cut and sold with a new opioid analog 100 times more potent than fentanyl and 10,000 stronger than morphine. In chemical terms, it’s called carfentanil.