Originally posted by the Voice of America.
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                  Americans Learn to Respond to Mass Shootings

   The frequency of mass shootings in the United States is making
   Americans increasingly aware they must be prepared for the possibility
   and know how to respond. American companies, schools and ordinary
   citizens are getting advice from security experts and psychologists.
   Zlatica Hoke has more.
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   [1]http://www.voanews.com/media/video/3087331.html

References

   1. http://www.voanews.com/media/video/3087331.html