On Metal Gear Solid 5 what is the language of soldiers there? I cant interrogate anyone.

By mistake I discard my Kikongo interpreter. But I have my Russian , Afrikaans and Pasto on the Support Team.

Also when I check my Support Team detail says I can translate Kikongo with S rank

If those are talking Kikongo, is there a way I can find another interpreter? I went on free roam to Africa post #16 to see if I find him again with no luck.

NOTE: I cant replay SIDE OP #4. Is grey out.