frank friglucci and tom winter. it's hard to know where to start, tom winter. i have never -- covering mass shootings since columbine as you have -- heard anything like this. >> the man who heads the texas department of public safety is, i would say, the greatest failure in modern american law enforcement history as it pertains to an active shooter, period. what he described was an incident commander or a situation where -- he says he doesn't know whether or not this incident commander, the person who is the chief of police for the school district, this is his primary job is the safety of the school, what he says is he made the conscious decision not to enter the classroom while students, as you described children, as you described, were calling 911. on one particular occasion around 12:43 or 12:47, that caller was begging for the police saying, please send police now. earlier than that, at 12:16, a 911 caller told the operator that eight to nine students were still alive. at that point, a member of the law enforcement community was clearly aware that there wer

with us, frank friglucci. doctor, these numbers are staggering. why do we see so many more mass shootings here in this country than any other country? >> andrea, thank you for having me on. you know, my view is that this is an extraordinarily complicated issue. that really needs to be looked at more -- sort of as a multi-facetted approach. i am a little bit concerned about the issues that people will focus on, be it weapons or law enforcement or mental health. that's only a part of the bigger picture. i fully agree, one factor is that there's really no role for assault weapons outside of the military and law enforcement. i think that's a critical issue but not sufficient. there's a number of other issues that i could speak to. but i really think we need a more multi-facetted, wider ranging approach to looking at this problem really from a multidisciplinary view. there's a number of other variables. i think that there are proactive measures we can be taking to try and reduce the risk. looking at young people, kids, young adults, who are at an eleva