Adjoining the living space's lounge area was a gun vault. It contained a wide and formidable array of weapons, including pistols, semi-automatic rifles, bolt action rifles, assault weapons, shotguns, and grenades. The door had a combination lock that was changed several times by Locke.
After the weapons were removed, the gun vault served as a holding cell for Ben starting with "One of Them" and was made bigger to accommodate holding him. It changes from a tight room to a wider room. Space is made for the bed that was not there in the previous episode.
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