active shooter events. do we have any idea why? >> no, we don't at this time. that wasn't a primary focus for our study. when we looked at these events, we're a law enforcement training center and we're primarily concerned about helping law enforcement respond to, i think it's also important to point out because these are pretty infrequent events that small changes can make it look like there have been big movements when there may not have been. there's always the possibility that for some reason our search strategy, we searched through lexis/nexis, previous, before 2008, maybe we weren't able to identify as this many things because they weren't archived as well. keep that in mind as well. but looking at them it does appear there's been an an increase. >> increase in these type of mass shootings. let's get your reaction to the press conference in roswell. we have a 12-year-old suspect. he gets a 20-gauge pump shotgun from his parents, according to