A a former NYC Metropolitan Transit Authority official revealed that an attack on the subway tunnel's could result in 19,000 casualties, according to a report by ABC News. Eight years after 9/11, crucial security equipment has still not been installed to protect NYC subways.

Four years ago, the MTA awarded a more than $200 million contract to Lockheed Martin to create a surveillance system to monitor NYC's subway systems. The technology was supposed to be in operation last year, but it remains unimplemented as Lockheed Martin and the MTA are currently suing each other over the contract and all work has stopped.

The MTA has "already paid $250 to $300 million to Lockheed and the only thing they have to show for it is litigation, being in court," said NYC Transportation Committee Chairman John Liu.

This video is from ABC's Good Morning America, broadcast Sept. 11, 2009.

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