The damage al Qaeda’s attack caused when it destroyed the World Trade Center was about $10 billion (not including the substantial cost in terms of human life). Meanwhile, the TSA’s annual budget is $6.3 billion, so we’re spending more than half the cost of the destruction of the World Trade Center every year to protect ourselves from another attack. Clearly, the bulk of the cost of the September 11, 2001 attack has come in terms of the costs we have incurred since that day, not the cost of the actual destruction from the attack. That is bin Laden’s revenge.









