The material costs of the attacks are well in excess of one hundred billion US dollars. Factoring in Stock Market losses, loss of revenue in New York City, loss of jobs, impact on air travel, and heighetned security, some estimate the cost approaches two trillion dollars.<ref>[http://www.iags.org/costof911.html The Cost of September 11] Institute for the Analysis of Global Security</ref> | The material costs of the attacks are well in excess of one hundred billion US dollars. Factoring in Stock Market losses, loss of revenue in New York City, loss of jobs, impact on air travel, and heighetned security, some estimate the cost approaches two trillion dollars.<ref>[http://www.iags.org/costof911.html The Cost of September 11] Institute for the Analysis of Global Security</ref> |