They were, and still are, racked up on virtually every space they had at the Boeing Everett Plant. Since the shells were not heated, it seemed there was a condensation issue...you could hear the dripping sound..
Looking at the cabling in the NTSB image, something appears odd. Not sure if the cabling in the upper left is data or power, but I believe power is supposed to be contained within 6 inches of a connection (like the cabling shown in the far background)
The exposed cabling that runs through the posts, just seems really odd...
I would think that the fire suppression system would always be armed, and it would be interesting to see if there were any recorded alarms from the incident.