Just looking for input from anyone that has dealt with overdoses involving Fentanyl / Carfentanil. Looking for Training information for Dispatch. We notify responding units if we are told by the caller that either may have been the cause of an overdose. Would like to hear about anyone's 1st hand experience with either of these drugs. It may be about to get worse in our area. So far we only have had one overdose that was 'suspected' that the patient may have used Fentanyl Thanks!