Thanks. I’m not up on all of it.
Three months is a short period I’ll admit. It seems like a guy this “damaged” would have given some signals that would have prevented him from having the key to the gun lock-down, even so.
A good rule when letting a new person into your own would be to keep the key and evaluate over a period of time if he should have access. You don’t give access to a gun to a newcomer in your home.
These people are very lucky he didn’t start out his day killing them.