As a visitor approaches the front entrance of a Minneapolis elementary school, their every move is documented by a security camera. A second camera positioned on the right picks them up as they walk ...

PHILADELPHIA (CBS) -- Mayor Nutter called a news conference on Monday to refute the accuracy of security maps for the Pope's visit that are circulating on the internet. Nutter, however, won't say when ...

For more than two decades, the mission of homeland security has been defined by its geography, by borders, perimeters, and zones of protection. From the aftermath of 9/11 to the present-day challenges ...