I thought some list members might find this interesting. I still like what the British did and the tunnel under Berlin. https://www.washingtonpost.com/graphics/2020/world/national-security/cia-crypto-encryption-machines-espionage/?fbclid=IwAR2s7TrU9nXVXx4kUy-n7-LnXz3GM754uEzJjlPeTRa-TrOWhqm_QcH1HUI > >