Businesses, high-rises and even private homes could share video with the city's 9-1-1 center.
Some call the program is intrusive.
The American Civil Liberties Union is reacting coolly to plan.
Plan to expand Chicago's camera system moves forward
CHICAGO
Surveillance cameras will start appearing on the city's street sweepers and a revolutionary video-link will add private-sector cameras to the city's vast video network.
