The Evacuation Area is where the Maceo Special Operation starts and ends. You set out from here to grab the PG-240X from the Omaja airbase, then return to get it out.
A staging point on Maceo, used only in the Special Operation of the same name. It is both your landing spot and your extraction point.
You leave the Evacuation Area, push to the Omaja airbase and retrieve the PG-240X. Then you bring it back here to finish the operation.