Iraq's Superbombs: Home Made

The Defense Department is trying -- again -- to prove that Iraq's superbombs were made by weaponeers in Tehran. But the fact is, many, many groups now know how to make these deadly "explosively formed penetrators," or EFPs, which use an explosive charge to convert metal discs high-velocity, tank-killing slugs. It turns out, even the U.S. military has a kit for stamping 'em out on the fly. Explosives guru David Hambling explains.