The Companhia de Defesa Química, Biológica e Nuclear (former ''1º Pelotão de Defesa Química, Biológica e Nuclear (1º PDQBN)'') is a
Special force of the
Brazilian Army
The Brazilian Army (; EB) is the branch of the Brazilian Armed Forces responsible, externally, for defending the country in eminently terrestrial operations and, internally, for guaranteeing law, order and the constitutional branches, subordina ...
responsible for chemical, biological and nuclear defense. The company assists and advises the preparation and employment of troops and resources in environmental
NBC
The National Broadcasting Company (NBC) is an American commercial broadcast television and radio network serving as the flagship property of the NBC Entertainment division of NBCUniversal, a subsidiary of Comcast. It is one of NBCUniversal's ...
(nuclear, biological and chemical). Their mission is survey, identify, detect and monitor
pollution
Pollution is the introduction of contaminants into the natural environment that cause harm. Pollution can take the form of any substance (solid, liquid, or gas) or energy (such as radioactivity, heat, sound, or light). Pollutants, the component ...
levels and, where appropriate, decontaminate personnel, equipment and areas under the influence of NBC agents.
NBC units and formations
Brazilian Army
{{Brazil-mil-stub