From the Back of the Box:
United forces under your command have successfully defeated the rebels. All military bases controlled by OVERMIND may again serve to protect peace and prosperity on Earth...
BUT NOT FOR LONG, because a new threat is coming. TERRORISM. Beginning as small groups of devoted individuals, terrorist groups begin to emerge. Their members do not want peace on Earth.
Now all bases are ready to face the terrorists and your duty calls you again to command the united forces of UFSC.