That's new. They probably switched to armed after that crazy guy broke in after hours a few years back, armed with a switched full auto Glock. He attacked an unarmed guard then tried setting the place on fire. Surprisingly light sentence too, didn't even prosecute him for the illegal machinegun.
https://askarimediagroup.com/
Probably stopped or thwarted by the alphabets. The intelligence community really stepped up their game since 11SEP01
That was 24 years ago.
Per Ardua ad Astra