+ At the end of the catwalk You reach the main warp reactor door.
Jacobs: Eh, you don't want to go inside there Commander, its full of high levels of radiation.
I can't go in there with my protective suit either, too much radiation. You'll flood the
whole ship with radiation if you open that Containment door. Its only supposed to be open
when there's no radiation inside the core.
Jacobs: How else are the personnel of the ship are to reach all the areas of the core for inspection to make sure that everything is in good working order. That's why the Catwalks were built in. They are no longer radioactive now that the core has been flushed.
Examine Panel 1 on far wall of Reactor Core
Examine Panel 2 on left side of Reactor Core
Walk up Catwalk 1 to central unit
Walk up Catwalk 2 to Upper Unit
Walk up Catwalk 3 to Top Unit
Walk to Bottom Catwalk down to the Base Unit