It was an RF tight triple wall secure engineering facility with no windows and power filtering. Vehicles and people searched on entry and exit. They knew very w

It was an RF tight triple wall secure engineering facility with no windows and power filtering. Vehicles and people searched on entry and exit. They knew very well of these risks a long time ago. To give you an idea, the building was designed in the 1950s where they even had dampers on the water pipes coming on site due to the use of typewriters historically.