Temporal Security Annex was a classified establishment of the Temporal Security Agency. It was located somewhere in North America 942 meters below ground.
It was actually a small space accessed only through a Global Transporter, which led to a high security door. Agents of the Temporal Protectorate who entered the door, were led to a room with doors to the Command Center, the Ready Room and an elevator to Pegasus. The dominant feature of the room were windows that looked out into a huge room with the huge device.
The C.C. room contains a control station along one wall with three monitors, two CD-ROM drives, and a chair. The console was used in review sessions and comparison with the Historical Log