As described by Wikipedia http://en.wikipedia.org/wiki/Homeland_Security_Department http://en.wikipedia.org/wiki/Homeland_Security_Department http://en.wikipedia.org/wiki/Homeland_Security_Department http://en.wikipedia.org/wiki/Homeland_Security_Department http://en.wikipedia.org/wiki/Homeland_Security_Department http://en.wikipedia.org/wiki/Homeland_Security_Department Homeland Security Department http://en.wikipedia.org/wiki/Homeland_Security_Department Homeland Security Department Homeland Security Department http://en.wikipedia.org/wiki/Homeland_Security_Department http://en.wikipedia.org/wiki/Homeland_Security_Department http://en.wikipedia.org/wiki/Homeland_Security_Department