
As I write, CNN is reporting the breaking news that a threat about the planned simultaneous detonation of seven “dirty bombs” at this weekend’s National Football League games, posted Oct.12 on an Internet chat site, is not considered credible by U.S. authorities. Although the Department of Homeland Security initiated prudent security measures by informing and advising the NFL, it has determined the threat is unreliable. How and why did DHS determine the threat is empty? Is it technically and organizationally feasible to launch such an attack with radiological dispersion devices (RDDs) — so called “dirty bombs” — on the U.S. […]