Marines. he was planning or hoping to join the impairs after grrgs. we did reach out to the marens they said they had no record of any contact with the young man. alex marquardt, appreciate it. chris cuomo is also in santa fe. i want to check in with chris. still a lot to learn about this young man. reporter: rae yeah but how familiar does it smack already, anderson? that s why they put the columbia protocol into place. you can ask people a series of questions and identify risk of homicidal thoughts, suicidal thoughts. somebody knew something and we ll learn they didn t know what they were seeing didn t know what to do about it and wind up in the sim place we ve been so many times. and there are other aspects of this wigs we need to get into that will teach us something for sure. let s do that right now. we have cnn law enforcement analyst and retired fbi supervisory agent james gal yan o special agent james gallon o and national security analyst