I believe most nuclear weapons systems still use floppy discs...
We were using tape backups well into the mid-2000s at a graphic design place I used to work at. Never underestimate the power of inertia!Tapes survived in the consumer environment until the late 80s. But one hard drives became cheaper floppies took over then CDs in the 90s and then DVD.
I used to have a tape drive for my commodore 64 in the early 80s.
Well that's me not sleeping tonight. Thanks!
Having had worked on the access control systems for Nuclear bases. I am not worried