The door onward into the 'prison' was a heavy duty security door that swung on highly durable hinges. Suffice to say you notice that it was unceremoniously torn from them.
You are coming into what was once the cargo area for this massive freighter. Cells were installed with laser grids to keep prisoners detained; anyone trying to reach out would have something vaporized.
All the cells are empty in this corridor, though, and the laser grids off.
No.
This first corridor seems to have been low security. The cells are small and cramped but there is no additional security gear anywhere besides the laser grid 'doors.'
You push on and come out at the top of a large cargo room... which is pitch black, and you can see nothing below. The walkway you are on is dimly lit.