From the Brotherhood Combat Operations Manual

Once aircraft have begun operating from a Nod base, many Nod ground units in the general area gain the ability to call for transport. Units can radio in from the field requesting airlift from their current position. Carryalls will deploy, pick up the units needing transportation, and ferry them to a target destination. Be careful about exposing the Carryalls to enemy anti-aircraft fire because Carryalls are vulnerable targets and you run the risk of losing your infantry or vehicles in transit.

摘自兄弟会战斗行动手册

一旦飞机开始在Nod基地行动，整个区域的多数Nod地面单位都能获得呼叫运输的能力。单位可以在战场上无线电请求从当前位置进行空运。重型运输机（Carryalls）将部署，装载需要运输的单位并运送到指定地点。注意不要将运输机暴露在敌方防空火力下，因为重型运输机是脆弱的目标，你将面临失去正在运输的部队或载具的风险。