Radiological Janitors?

Bryan Bender reports in this morning’s Boston Globe about security arrangements for Barack Obama’s upcoming inauguration:

Because the biggest fear is a large-scale terrorist attack, the Pentagon will have on hand specially trained troops to deal with the aftermath of a chemical or biological attack, or radioactive fallout from a “dirty bomb.”

I’m glad we have people trained in handling the aftermath, but please somebody tell me we have other people trained in keeping there from ever being an aftermath!