Cameras to Fight Terrorism In Lower N.Y.

'The setting could pass for a high-tech trading floor: men in dark suits, sitting at tiered banks of desks, studying a steady stream of video and data on floor-to-ceiling monitors. But the front doors to the 28th-floor office near Wall Street are unmarked, and the men aren't fixated on stock market fluctuations. The stakes in their line of business, they say, are much higher.'

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