Another bit from the Skeptical Inquirer... From "A Skeptical Look at September 11th: How We Can Defeat Terrorism by Reacting to It More Rationally":

To conclude, we suggest that most homeland security expenditures, which in the zero-sum budget game are diverted from other vital purposes, are terribly expensive and disproportionate to competing needs for preventing other causes of death and misery in our society. While prudent, focused improvements in security are called for, the sheer costs of most security initiatives greatly distort the way we address the many threats to our individual and collective well-being. Our greatest vulnerability to terrorism is the persisting, irrational fear of terrorism that has gripped our country. We must start behaving like the informed, reasoning beings we profess to be.