The story is co-workers at the security company where he worked are the ones who reported him, because of things he said at work. For co-workers to report a fellow employee, it would have to be pretty bad. Somewhere along the line, the security company management should have fired him, because they work on government security contracts, and the FBI should have investigated deeper, notified the states where he had a firearms license, his family should have been interviewed, and everyone put on notice that we have a terrorist in our midst.