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McCaffrey: Bombs 'Not Sophisticated, Foreign-Made'

Tuesday, 16 Apr 2013 | 4:36 PM ET

Security consultants say the entire calculus of protecting a marathon has changed, reports CNBC's Scott Cohn; and Gen. Barry McCaffrey, ex-National Security Council member, weighs in. "[These bombs] were not sophisticated foreign-made intelligence provided devices," says McCaffrey.