Terrorist attacks have shifted from air to rail, study suggests

Data on terrorist attacks from 1982 to 2011 show a long-term trend away from air attacks and toward railroad and subway attacks, underscoring the need for increased intelligence gathering to intercept those redirected attempts. Successful terrorists have shifted their focus in recent years away from attacking airlines to attacking subway and rail systems, according to an analysis of terrorist attacks over a 30-year period from 1982 to 2011 by a leading health and safety researcher.

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