from the post below:

Nineteen hijackers plus other al-Qaida plotters spent an estimated $400,000 to $500,000 on the plane attacks that killed 2,995 people and caused $50 billion to $100 billion in economic damages.

What followed were three wars in which $50 billion amounts to a rounding error. For every person killed on Sept. 11, another 73 have been killed since.

i guess we showed 'em!