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Fallout 3 Game Add-Ons (DLC) Hints
Enter the data aboard the survey vessel.
1 of 5: Return to the USS Ozymandias and use the terminal again.
2 of 5: Click on the three options for entering "auth codes."
3 of 5: After all three codes are verified, click on "Access Expedition Supplies" to unlock the safe and finish the quest.
4 of 5: Don't forget to raid the safe. It has lots of good stuff in it, including ten bio-gas canisters.
5 of 5: As for what good they are, they create a small gas hazard that can be ignited with weapons fire. Toss one so that it explodes between you and a group of enemies, then stand back and ignite the gas with an energy weapon or flamer when they run into it.