Unlocks the psi disrupter for production.[1]

Studied conducted by the United Earth Directorate have shown that concentrated dose of sigma radiation can slow zerg movement and reaction speeds by as much as 50%. The psi disrupter has been developed to constantly emit sigma rays in a large area of effect, making it an essential base defense when facing a large zerg force.

Campaign Acquisition
Acquired from Hyperion laboratory for 25 zerg research points


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