[quote=@SimplyJohn]
Picture Hadley's Hope when the marines arrived in the film [i]Aliens[/i]. Dark, unpowered, abandoned, signs of small arms fire and grenade damage to the walls and deck plates, etc. And corridors, lots of corridors.
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[/quote]

When Marga sees the damage, she's going to put on her goggles. Readings for chemical traces of various things will appear. Now, what do you want them to explain and then not explain/leave unanswered?