Frame for the radar harness. This thing was about 30' across, and weighed a whole heck-of-a-lot.
It was eerie to such a large construction swaying around freely in an enclosed space as it was suspended from the walls above. This was to help mitigate damage it would have otherwise suffered in the event of a nearby nuclear blast causing the complex to heave.
My only regret is the crappy-ness of the photo. :(
