I guess they should have kept those 8" floppy disks that implemented a completely air gapped crypto key system for the missile silos.

https://www.google.com/search?client=firefox-b-d&q=nuclear+m...

>The Defense Department’s 1970s-era IBM Series/1 Computer and long-outdated floppy disks handle functions related to intercontinental ballistic missiles, nuclear bombers and tanker support aircraft, according to the new Government Accountability Office report.

https://www.cnbc.com/2016/05/25/us-military-uses-8-inch-flop...

From 1976! They're using 50 year old computers? That's amazing.