From what it looks like?, I think employees who have a court issued TRO(temporary restraining order) for their spouses or significant other, this information needs to go through the employees place of hire.
There should be security measures taken in order to maximize other employees safety. As for those who have been issued a TRO by our courts, it's for a reason which should not have to be spelled out to the offender. If a federal employee can slip though the cracks then anybody can slip through the cracks. As in the case of the Texas shooter at a church where his wife's grandmother attended.
I hope the HPD runs this perp through the ringer, especially since he threatened the other employees with bodily harm.