Retrieve the Data is a Save the World mission where you are needed to defend a balloon with the something thats going to drop down. It scans for D A T A. This will help your Homebase track down survivor's.
Retrieve the data works like this: You find the balloon. You have to wait till 8 minutes left and then pop the balloon when it shows a health bar. Mean while that you build a fort and predict where the enimies will come from and make a walk-into-trap if you want or you can defend normally. After the balloon has landed Husks will come from either N-S-E and W.
Starting from finding the balloon before Ray to make sure the data doesn't get corrupted. Make sure husks dont touch the data, or it'll get corrupted.