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In 2006, the National Transportation Safety Board had warned Washington Metrorail officials that its aging trains needed to be phased out of its transit system. Yesterday, at least one of those old trains was involved in a crash on the nation’s capital subway line that has claimed nine lives and sent more than 70 people to the hospital. An NTSB official told the Associated Press that the old trains on the Metrorail system lack important devices, which give officials information on the cause of a crash.