It seems that the FBI were warned about a person with the same name that wanted to become a school shooter sometime in advance from a You tube posting. Also the school superintendent was worried on violence from this individual when they expelled. How many warning flags does it take to start an investigation and remove firearms from this individuals possession --- seems like more than two or three.
https://www.buzzfeed.com/briannasack...7zn#.ljLeEEOK7