Following the attacks on September 11, 2001, the United States government created the Department of Homeland Security. Its primary task is to keep the terrorist threat in permanent view. To do this, it developed a five-stage warning system based on five color codes: green, blue, yellow, orange, and red. On the occasion of the fifth anniversary of 9/11, 5 Codes examines the relationship between architecture and fear as reflected in the U.S. terror warning system. With a fascinating collection of interviews and texts by acclaimed writers such as Noam Chomsky, Beatriz Colomina, Gerd de Bruyn, and Janice Kerbel, 5 Codes presents a vivid and informative account of the bright and shadowy sides of our collective paranoia