These are the all important security systems
controllers. Find these, and you can disable all of the
security systems located in a mission. Once inactivated,
the sentry controller shuts down all the
Turrets and
Cameras, while the
mine controller shuts down all the Mines. Please note
that, once disabled, you cannot fight, and therefore
cannot receive XP from,
Turrets, Cameras,
or Sentries.