I just read Mitchell, James K. Urban Vulnerability to Terrorism as Hazard in Cutter, Susan L. & Richardson, Douglas B. & Wilbanks, Thomas J. eds. The Geographical Dimensions of Terrorism (New York: Routledge, 2003) p. 17-25. This article sets a research agenda and was most inspiring. I could consider some of the statments in this article for quotes to address practical solutions to terrorism prevention and law enforcement.