rob: doctor darren porter, thanks for coming on this morning.ough day to be in this business absolutely. let's talk about what was missed here. so many warning signs we have seen. to talk about an affinity for guns and violence with animals, his mom had to call the police to keep him straight. there was a lot of warning signs here. could this have been averted? >> i believe so. his social media was a blueprint, it was horrific, someone that was reflective of a sociopath. this communication he had were troubling coupled with he exhibited antisocial behavior among his peers. the school placed a picture of him up to state he was not allowed to come back into the school with a backpack so when i look at the security in this school, two components, and external and internal component, the internal component deals with housing of the school, the external component could have effectively eradicated stopped the threat moving forward. just had to close the doors because this was something that started outside. traditionally thick, wide doors, not screen