A freight train carrying hazardous chemicals derailed and caught fire near East Palestine, Ohio. Officials made the controversial decision to try a "controlled burn." Right or wrong, that approach sent vinyl chloride, ethylhexyl acrylate and butyl acrylate spewing over a three county area. Included in the toxic compounds released was "phosgene." During World War I they called that "mustard gas." Because they physically happen to be located near the site of the toxic chemical disaster, Case Western Reserve University researchers were on the scene immediately. They got one of the research grants to continue monitoring exposure victims.