Extracted prisoner being held at Munoko ya Nioka Station, NE Guard Post
One of the hidden objectives in this mission is connected to locating a prisoner. You can find this character in the south-eastern part of guard post number 16, which is shown in the picture above. You will visit this guard post when following the Major's subordinate and you can use this chance to rescue the prisoner. Make sure that you are not detected by the subordinate or by the soldiers standing around the building (it is good to neutralize at least a few of them). After securing the area, carry the prisoner outside, get away from the guard post and Fulton him.