https://www.brothers-brick.com/2009/02/03/this-chamber-been-replaced-with-a-live-fire-course-designed-for-military-androids-the-enrichment-center-apologises-for-the-inconvenience-and-wishes-you-the-best-of-luck/
"This chamber has been replaced with a live fire course designed for military androids. The Enrichment Center apologizes for the inconvenience and wishes you the best of luck."