[Richard]

A graphic offering a good depiction of the size and complexity of the DHS mission to protect America from the threat of a terrorist attack - and this is just one of a number of ways the US could be attacked yet again.

Richard's $.02

A Threat In Every Port
Lawrence Wein, NYT, 14 Jun 2009

WHILE President Obama’s future vision of “a world with no nuclear weapons” is certainly laudable, for the present America still needs to do everything it can to prevent a terrorist from detonating such a bomb on our soil.

The Domestic Nuclear Detection Office, part of the Department of Homeland Security, is in charge of developing a worldwide nuclear-detection system that, primarily, would use technology to monitor vehicles and shipping containers along the various transportation networks by which nuclear weapons could be smuggled into America. Yet the Government Accountability Office found last year that the detection office “lacks an overarching strategic plan,” despite the $2.8 billion a year spent on the initiative.

How should the detection office proceed? The best way to view the problem strategically is through game theory. In this case, the government plays first and uses its budget to place detection resources — technology, security experts and the like — at the various “nodes” along the transportation network, like seaports, airports and border stations. The terrorists, in turn, can be expected to choose the path that gives them the best chance to carry out an attack.

As the accompanying chart illustrates, there are a dizzying number of paths that terrorists could use to transport a foreign-built weapon to an American target city — 132 variations, in fact, taking into consideration all four likely modes of transport: commercial airplane, cargo airplane, container ship and cruise ship.

(cont'd)

http://www.nytimes.com/2009/06/15/op...tml?ref=global