Use a Cryocopter to shrink your MCV while it is in Pack mode. While the MCV is shrunk, unpack it. You will have a mini Construction Yard, allowing you to build your structures twice as fast. Note: Remember the shrink ray only lasts for a short amount of time. Also, while your Construction Yard is mini it will have very low defense.
Have a spy infiltrate one of the following structures for the corresponding effect.
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