9/11

The events of 9/11 rocked the United States and caused reverberations in domestic and foreign policy for decades.

Passengers at Los Angeles International Airport pass through security in 2010. File photo by David McNew/Getty Images When Denver International Airport opened in 1995, the city was particularly proud of the main terminal building. They spent a lot of…

After 9/11, the Department of Homeland Security created the Nationwide Suspicious Activity Reporting Initiative to help spot potential terrorists, while the Mall of America launched its own security program. NPR and the Center for Investigative Reporting report how such efforts…