Shrink the targets
"Natural" disasters?
The government response : the first FEMA
The disaster after 9/11 : the Department of Homeland Security and the new FEMA
Are terrorists as dangerous as management?
Better vulnerability through chemistry
Disastrous concentration in the national power grid
Concentration and terror on the Internet
The enduring sources of failure : organizational, executive, and regulatory
Appendix A: Three types of redundancy
Appendix B: Networks of small firms.