Homeland Security Advisory System
In the United States, the Homeland Security Advisory System (HSAS) was a color-coded terrorism threat advisory scale created in March 2002 under the Bush administration in response to the September 11 attacks. The different levels triggered specific actions by federal agencies and state and local governments, and they affected the level of security at some airports and other public facilities. It was often called the "terror alert level" by the U.S. media. The system was replaced on April 27, 2011, with a new system called the National Terrorism Advisory System.
Threat level Orange at Raleigh-Durham International Airport
Homeland Security secured the Prudential Financial Building in Newark, New Jersey in August 2004 following the discovery of evidence of a terrorist threat to it.
United States Department of Homeland Security
The United States Department of Homeland Security (DHS) is the U.S. federal executive department responsible for public security, roughly comparable to the interior or home ministries of other countries. Its stated missions involve anti-terrorism, border security, immigration and customs, cyber security, and disaster prevention and management.
Headquarters of the U.S. Department of Homeland Security in Washington D.C.
A U.S. Customs and Border Protection officer addresses Vice President Dick Cheney (center); Saxby Chambliss (center right), a U.S. Senator from Georgia; and Michael Chertoff (far right), the second head of the DHS; in 2005
President George W. Bush signs the Homeland Security Appropriations Act of 2004 on October 1, 2003.
U.S. CBP Office of Field Operations officer checking the authenticity of a travel document at an international airport using a stereo microscope
