Supply bunkers are both the supply structure and frontline defense for Arcturus Mengsk in Co-op Missions. They can be built both by Dominion troopers and Dominion laborers. Full supply bunkers can be brought to the field with the Forced Conscription calldown. Supply bunkers serve as a point from which troopers and laborers can swap suits.
These bunkers are weak on their own, but can be stocked by troopers with advanced weapons to hold a position. They have a smaller model than regular bunkers, allowing more to fit in an area. Bunkers can be salvaged for their full cost, allowing them to be "leapfrogged" up the field. Having supply bunkers near the frontlines aids in swapping troopers to laborers, which can repair Royal Guard mechanical units.