In the paper Stewart improves his previous work by “describing a more detailed probabilistic terrorism risk assessment that considers multiple threat scenarios and likelihoods, value of human life, physical (direct) damage, risk reduction and protective measure costs”.
To illustrate the application of cost-benefit assessment to the protection of infrastructure systems, the cost-benefit assessment for the following infrastructure systems has been performed:
(i) commercial and institutional buildings,
(ii) highway bridges, and
(iii) hardening of cockpit doors.
“Three examples showed under what combination of risk reduction, threat probability, and fatality and damage costs the CT protective measures would be cost-effective for buildings, bridges and aviation infrastructure.”