Boston Marathon bombing puts increased security emphasis on Pittsburgh

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Boston Marathon bombing puts increased security emphasis on Pittsburgh

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Boston Marathon bombing puts increased security emphasis on Pittsburgh

by WTAE - Pittsburgh Videos 2:32 mins

Boston Marathon bombing puts increased security emphasis on Pittsburgh

by WTAE - Pittsburgh Videos 2:32 mins

With less than three weeks to go until the Pittsburgh Marathon, Monday's bomb blasts at the Boston Marathon have placed an increased emphasis on security.

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