What Will Homeland Security Cost?

[...]In this article, we attempt to quantify the economic effectsof the homeland security efforts of the public and privatesectors, focusing specifically on the costs of these efforts. Inpractice, it is difficult to classify which expenditures are relatedto homeland security. For this reason, we use the broadestpossible definition: all expenditures possibly aimed at eitherpreventing damage due to terrorist attacks or at preparednessfor the response to potential attacks. This broad definitionsuggests that the figures presented here should be interpretedonly as estimates of the maximum effect of homeland securityon the economy.[...]