The DHS Science and Technology Directorate has launched Season 6 of its Technologically Speaking podcast with a discussion on the science behind chemical threat preparedness and response.
In the first episode, host Brittany Greco speaks with Helen Mearns, Deputy Director of S&T’s Chemical Security Analysis Center, about the lab’s work to help protect the United States from chemical hazards.
Mearns explains how CSAC supports emergency planners, first responders, and public safety officials by studying chemical detection, food adulteration, synthetic opioids, explosive modeling, and large-scale chemical release scenarios.
The episode also covers CSAC’s work on modeling tools that can help inform decisions during incidents such as chemical leaks, natural disasters affecting industrial sites, or large public events. Mearns points to recent preparedness work involving major events including the Super Bowl, NCAA Final Four, and the upcoming FIFA World Cup.
CSAC’s Jack Rabbit Program is also discussed in the episode. The program uses large-scale experiments to improve understanding of how chemicals such as chlorine and ammonia behave during releases, helping responders make decisions about evacuation, shelter-in-place guidance, protective gear, and public safety.
Mearns said the work is designed to give responders practical information before and during emergencies. “We are more than happy to literally work side by side with people,” she said, describing how CSAC helps emergency managers interpret modeling results.
The episode highlights the behind-the-scenes science that supports chemical security planning across the homeland, from major event preparedness to everyday risks involving hazardous materials.
