let's go to our security consultant j.j. green. he's our national security contributor joining us by phone from washington d.c. j.j. >> hi, randall. >> so you were saying earlier that there are protocols in place at most college campuses because we've had so many of these tragedies in the past decade or so. one thing that obviously is very useful is social media. universities and colleges have developed a system of sending out a warning usually to everyone to stay in place or to seek shelter when these sort of events occur. >> yeah, but these plans that are in place now that are parts of homeland security and local homeland security and local emergency management officials and local police are much more complex than this. what they'll do is they'll go to any college, university, any business, any significant organization that has a significant population and what they'll do is a survey to begin with. they'll survey that organization on what kind of security they have in place now. and that survey will tell them where there are vulne