While not confirmed, and still lacking an official location or time, U.S. officials have treated the potential attack with enough seriousness to have increased rail security.
This could well be the prelude to some false flag operation in this country to be blamed on some enemy du jour.
But I will tell you who is laughing all the way to the bank right now, due to burgeoning orders for more cancer-causing scanning machines being ordered, in light of these alleged "threats": Michael Chertoff, of the Chertoff Group, and the manufacturers of these devices.
Also, one has to wonder just what part of the financial portfolios of Janet Napolitano, head of Homeland Security, and John Pistole, head of TSA, are invested in such technology. They, too, may well be laughing all the way to the bank on this; and remember: these are people who, because of their rank in the US government, never have to submit to either the scanners or the GropeNazis.
Intelligent individuals who "opt out" of this procedure, because they understand the risks
will find themselves getting fondled by the GropeNazis.
What is very interesting about the above article is that it came out in an MIT publication in the fall of 2009.
If the danger was known then, and the TSA workers operating this equipment are obviously under far worse statistical chance for exposure which may ultimately lead to illness and death from cancer than occasional air passengers, when were the executives at TSA going to let them know?!?
The short answer is, never.