Police responding to the deadly Virginia Tech shootings Monday may have been using tactics learned after the Columbine killings in Colorado in 1999.
Police responding to the deadly Virginia Tech shootings Monday may have been using tactics learned after the Columbine killings in Colorado in 1999.
Read more at: http://rss.cnn.com/~r/rss/cnn_topstories/~3/109551258/index.html.