Boston EMS crews carry a carbon monoxide detector on their gear. The detectors can turn even routine runs into a massive evacuation. Deputy Superintendent of Boston EMS Ed Hassan joins Blair Miller to discuss the impact of these tools and the danger posed by carbon monoxide fumes.

When The Detector Goes Off

First on Scene is a podcast about the people who run toward danger and the people who become heroes in our darkest hour. Boston 25's Blair Miller sits down with first responders to hear the stories of what they see every day.

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When The Detector Goes Off

When The Detector Goes Off