The most incredible wonderland for anyone doing electronics. You could spend days digging in there and always find something new and bizzare. Best part was that the building was practically a Faraday cage and there was no cell reception to help you identify what you were looking at.

I bought an old ADF there (cheap avionics), great vacuum florescent displays, tubes, reels of SMD parts I still have, PIC microcontrollers for unreasonably good prices, and bags and bags of other old parts. The back wall of the office area was entirely lined with Halicrafters S-38 longwave radios.