Combat support airfield

The Combat Support Airfield was a building designed to supplement regular GDI airfields. They are equipped with the facilities needed to repair, refuel, and rearm four VTOL aircraft, such as the Firehawk or Orca Gunship. In addition, it is cheaper to build a support airfield than a normal one.

However, the combat support airfield lacks the requisite facilities to build aircraft. Therefore, a normal airfield must be built prior to the construction of support airfields.