Retrieve the FOB from the base Commander

Lie to the Navarro guard saying you're the cleaning crew and *clean* the shelves of their FOB. If you talk to the cook about the main base and the FOB, then pass a speech check with Commanders door guard you can say that base sent you to secure the FOB and lock it up and then freely loot the commanders shelves.

Also, make sure that you have the quest from Cookie before you "clean" the locker or a bug occurs to where you can not lockpick the locker to get the FOB even if u kill the commander and everyone there. (Only tested with 70% lockpicking)