Infantry Portal

Function: phases in reinforcements from the dropship. Without an infantry portal, the aliens' advantage will grow with every marine lost. Infantry portals are the most crucial structure to defend, second only to the command console.

: dropships do not remain docked with the battlefield, for fear of contamination. The phase gate on a dropship is large enough to rapidly send multiple marines across a modest distance, as long as there are infantry portals at the other end. The more portals, the faster reinforcements arrive. See phase technology for more info.

New Structures: Arms Lab, Turret Factory, Armory