They use an elevator to get into the depths of the facility. NTF units arrive every 10 minutes in a helicopter at Gate A. NTF units can also use voice commands by pressing Z and a number on the keyboard. NTF units can also rescue Researchers and contain some SCPs. NTF units can kill Class-D and any Chaos Insurgency units in Entrance Zone, Heavy Containment Zone, and if holding a weapon in Light Containment Zone. NTF units get an FN P90 with 3 magazines, a USP, a Radio, Night Vision Goggles, a Level 5 Keycard, an S-NAV, and a Gas Mask. On SCP: Anomaly Breach, players can play this mode by purchasing the first pack from the SCP Packs.
As such, most of their operations are classified.
They are a special ops force deployed to Foundation Sites when standard protocols fail and multiple breaches are imminent. Mobile Task Force Epsilon-11 handles internal security for the SCP Foundation, under oversight by MTF Alpha-1.