Mobile Task Force Epsilon-11 handles internal security for the SCP Foundation, under oversight by MTF Alpha-1. They are a special ops force deployed to Foundation Sites when standard protocols fail and multiple breaches are imminent. As such, most of their operations are classified.
"Mobile Task Force Unit Epsilon-11, designated Nine-Tailed Fox, has entered the facility. All remaining survivors are advised to stay in the evacuation shelter, or any other safe area, until the unit has secured the facility. We'll start escorting personnel out when the escaped SCP´s have been re-contained."