Higher-level CBRN events may have peaked in the late 1990s, but as developments in technology make it easier to acquire biological, chemical and even radiological agents, Gary Ackerman and Lauren Pinson say the biggest threat could come from lone-wolf attacks.
Ackerman, Gary, and Lauren Pinson. 2013. "Gauging the Threat." Defence Procurement International (August): 52-56. http://edition.pagesuite-professional.co.uk/launch.aspx?pbid=4a891638-5….