Jan 27, 2011 — DHS Secretary Napolitano today (1/27) announced the end of the much maligned color code threat level advisory system former President George W. Bush put in place after the 9/11 attacks. The current HLS Advisory System will be phased out and replaced in April 2011 by the National Terrorism Advisory System (NTAS).
DHS says the new NTAS "will more effectively communicate information about terrorist threats by providing timely, detailed information to the public, government agencies, first responders, airports and other transportation hubs, and the private sector."
DHS also has established a NTAS Twitter page.
Source: Planet Data