i want you to take a look at this. during the 1992-93 school year, 57 violent deaths occurred at school or traveling to or attending a school sponsored event. see the trend there. during the 2010-1011 number that number was 31. it's important to note numbers are not in for 2012, and 2013. that school year 26 deaths occurred at sandy hook elementary. overall, youth homicide at school accounts for less than 2% of all youth homicides. that, of course, doesn't do much for the fear factor among many parents and students. visiting a school that has taken the fear of school shootings and channeled it into innovation. hi there, zain. >> hi. a group of high school students at a high school in washington, d.c. invented what they call aing althoughing device. a device they hope will protect them in an intruder or school shooter tries to break into this classroom. simple stuff, made of a pvc pipe