I think they will be back to loot and explore the new hatch.
My big question is... Is there another botton? The hatch looks bigger than the first one, and even if most of the stuff was taken there are still flash lights and suff in the lockers. Why leave those things if your moving out. Is Someone still there pushing a botton on the other side of the bunker? I have a feeling that they were not completely alone in there.

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Hope is a very dangerous thing to lose. - Sayid

I do what my Rice Krispies tell me to. - Anonymous