Hunter Manufacturing Company 
Air filter systems for protection from nuclear, biological and chemical substances.
http://www.huntermfgco.comNor E First Response Inc. 
Manufacturer of mobile decontamination systems for NBC/WMD incident response.
http://www.nor-e.com
Clean Earth Technologies LLC 
Research, development and manufacture of novel technologies for the intelligence, defense, homeland security and life science sectors.
http://www.cleanearthtech.com
Bruhn Newtech 
CBRNE / NBC and Explosives Hazard Management solutions, from training and software to surveys and equipment.
http://www.bnl-cbrn.co.uk/
Engineered Support Systems, Inc. 
Designs, manufactures and markets nuclear, biological and chemical defense systems, air conditioning and heating systems, water and petroleum distribution systems and other ground support equipment. (Nasdaq: EASI).
http://www.engineeredsupport.com/
Biological Chemical Decontamination Systems. Inc 
Decontamination supplies, emergency response equipment and hospital decontamination equipment.
http://www.deconsystems.com/
Microfluidic Systems Inc. 
Development of 'biodefense' instruments for military and commercial customers that monitor the air for pathogenic agents.
http://www.microfluidicsystems.com
Argonautic Life Support Systems EE 
Authorized distributors for Viking Diving Suits and Trellchem Protective suits and accessories for chemical and biological warfare.
http://www.alss-ee.com