Security in each complex is controlled from a two-story security glassed-in "bubble" that allows officers to open and close doors throughout the unit on both cell blocks and in the programming space on the level above the cell blocks. While the electronic controls in the bubble were state of the art in 1982, they were due to be replaced in 2010 with modern computer controlled updates. Another system that was to be updated in 2010 is the vibration sensors on the exterior fence. The original fence used high tech vibration sensing technology from Israel that is no longer manufactured or supported.