Military Pentagon warns that US faces IED threat at home

The roadside bombs (improvised explosive devices) so deadly to US troops in Afghanistan are also being deployed against Americans at home, as the Pentagon adapts wartime strategies to help counter the threat.

By , Staff writer

Timothy A. Clary/AFP/File

What is the danger that improvised explosive devices – the sorts of roadside bombs routinely used in Afghanistan, for example – could be used on highway overpasses in the United States?