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New York City's Hidden Surveillance Network Part 1- by Scientific American

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Published on Sep 16, 2011

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The terrorist attacks of September 11th drastically changed the security strategy in Lower Manhattan. A massive camera network--dubbed the 'Ring of Steel'--is at the heart of this new strategy. In the first of three videos, security expert Josh Marpet points out the network's street-level features.

Read more here: http://www.scientificamerican.com/art...

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This video was originally published to ScientificAmerican.com on September 9th, 2011. For our most up-to-date videos visit the Scientific American video page at http://scientificamerican.com/video.cfm or subscribe to our video RSS feed at http://rss.sciam.com/sciam/video-excl...

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