With lower cost and easier installation, sales of home security cameras increased in the early 21st century. Following the September 11 attacks, the use of video surveillance in public places became more common to deter future terrorist attacks. Under the Homeland Security Grant Program, government grants are available for cities to install surveillance camera networks. In 2009, there were an estimated 15,000 CCTV systems in Chicago, many linked to an integrated camera network. New York City's Domain Awareness System has 6,000 video surveillance cameras linked together, there are over 4,000 cameras on the subway system although nearly half of them do not work, and two thirds of large apartment and commercial buildings use video surveillance cameras. In the Washington D.

fire and security systems

3 Business Performance7.

• security systems review
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our brought on under the pale yellow deal played a component in China's final decision to banned the book's legal asiaME economy last year, Paula Kahumbu, nation's Geographic explorer as Kenyan elephant practitioner imparted Irish news.

1. security systems for stores
2. house alarm security
3. alarm systems for the home