The number of command centers deployed in combat zones drove the development of standard schematics to upgrade them into a dedicated military role. One variant was the orbital command. The ATVX orbital command entered service following the Brood War and allows space assets to better assist ground forces; it includes a satellite comlink useful for reconnaissance.
An orbital command summons one MULE via drop pod. If the ability is targeted on a mineral patch the MULE will begin mining automatically, extracting 45 minerals per trip. The ability may be used only on areas uncovered by the fog of war.
ATVX now manufactures a satellite comlink that can reveal unexplored areas on the map. The conlink can also call down a MULE. A MULE gathers much faster than an SCV and can produce a major surge in mineral production. Because it is a prototype, the MULE will come apart after a short period of time, but it is still well worth the cost.
The orbital command's functions were originally possessed by the sensor tower (albeit prior to the conception of the MULE). Its design was carried out after that of the planetary fortress, and didn't undergo much variation.