Where is the switch??? The only thing I found is on the bottom floor in big open room with reactors there is a dark skinned guy with glasses and jump suit that looks like a maintenance worker standing in front of a huge terminal. That terminal does nothing. But the map marker puts me around there. Where the heck is this switch!!! Ive gone to everyfloor and its no where that I can find!!!! Also there are doors that require keys, is it in there??? I killed the maintanence guy hoping to find key but i didnt find one. HELP!!!!