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ac dnt field boston marathon bomb trial_00030708
ac dnt field boston marathon bomb trial_00030708

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    Is the builder of the Boston bombs still on the loose?

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Is the builder of the Boston bombs still on the loose?

Nearly two years after the Boston Marathon terror attack, doubts linger over who helped build the bombs that were used. CNN's Alexandra Field reports.

Is the builder of the Boston bombs still on the loose?

Nearly two years after the Boston Marathon terror attack, doubts linger over who helped build the bombs that were used. CNN's Alexandra Field reports.