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A comment on The NSA’s Hidden Spy Hubs in Eight U.S. Cities. Parent comment

Re:The NSA’s Hidden Spy Hubs in Eight U.S. Cities by dekhn on Monday June 25, 2018 @04:00PM (#17395329)
Once I learned to recognize what an telephone exchange looks like, I have a hard time not seeing them. All over the place. Downtown, neighborhoods, etc. Big, unmarked buildings with no windows, mostly concrete, lots of infrastructure on top, and various telco trucks parked around at all hours.
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Re:The NSA’s Hidden Spy Hubs in Eight U.S. Cities by ucaetano on Monday June 25, 2018 @04:41PM (#17395621)
They look surprisingly similar to electricity substations, with the key differences being style (substations are usually older) and the vehicles parked in front.
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