This is the building from Control and the fact that 1. it's a real building and 2. it's an actual spy building is even crazier to me:
On September 17, 1991, management failure, power equipment failure, and human error combined to disable AT&T's central office switch at 33 Thomas. More than five million calls were blocked, and the Federal Aviation Administration private lines were also interrupted, disrupting air traffic control to 398 airports serving most of the northeastern United States.