First, I would have fired this incompetent immediately. The private sector does not allow for errors of this magnitude.
Second, the person who pulled this stunt either a) did it deliberately, b) was under the influence of drugs or alcohol, c) is the relative or significant other of someone in power.
As always, this is IMHO.
...First, I would have fired this incompetent immediately. The private sector does not allow for errors of this magnitude...
Incompetence in government is rewarded with a transfer to another department, bureau, agency, commission, or other bureaucratic department. Apparently that was the case here.