I was involved with some testing and work on a number of those systems when they were first installed. makes me feel good it all worked. The fire monitoring system is really just a long fiber that monitoris temp change form memory...which in turn activiates the water systems. I remember cos when this was made ppl still had the French tunnel fire in mind when bulidng this.
I wonder how they liked the exit signs....I chose them back in my uni days..
There are about 22 links form the burnely to the domain...so thats what they block both ways, to use the other for escape.