The Command Chamber is part of an underground base, built and created by Force Two of the GFMC Task Force Herakles in the Temple Grounds prior to the events of Metroid Prime 2 Echoes. They were stationed down below in the Splinter Hive, which was linked to a huge system of Splinter Hives. Many dead troopers can be seen here, some of whom reanimate into Dark Troopers.