In late September, U.S. Attorney General John Ashcroft issued a warning that terrorists could disperse chemical weapons through building vents. Now, a national hvac manufacturer, Comfort Systems USA (Houston), has announced that it will form a new "HVAC Access and Indoor Air Quality Initiative" in order to respond to concerns over ventilation systems and terrorism.
According to a company press release, the initiative stems from the company's general concern that the hvac systems it designs, installs, and services have the potential to be misused to expose large groups of people to hazardous contaminants.