Terrorism, political violence and asymmetric warfare; terrorist weapons, tactics and targeting; terrorist IEDs and bombing tactics; critical infrastructure protection; water system security; transportation security, especially aviation and rail security; the application of security technology as part of a comprehensive protective strategy. I also maintain a small library and archive on these issues so I can suggest books and other reference works to those who are interested in these subjects.
I've been studying terrorism and working in the anti-terrorism field since the late 1980's. I've been involved in a range of projects including threat, vulnerability and risk assessments; security planning; security policy and procedure development; emergency response procedure development; crisis management planning; open-source research on terrorism and related issues; training program development; exercise design and evaluation. I've provided these services to airports; airlines; rail terminals; ports; utilities; schools; law enforcement agencies; fire departments; federal, state and local governments; and corporations.