So, a guy gets upset and goes to work, where he kills four and injures fourteen. He had to have a third party buy his guns for him because he was a prohibited person:
Authorities on Friday were investigating whether the man who opened fire on co-workers at a Hesston, Kansas, industrial plant used guns purchased through a third party and not at a licensed gun dealer because his criminal background prevented him from buying guns legally, law enforcement sources familiar with the investigation told NBC News
The police had served him a restraining order just before the rampage, making him a double prohibited person:
A gunman who fatally shot three people and injured 14 others on Thursday began his rampage not long after he was served with a restraining order aimed at barring him from contact with someone he had abused, authorities said Friday.
And then he violated company policy by taking his double plus illegal possession of guns to work.