The primary communication system used by the missileers is still dubbed “SACDIN,” which stands for Strategic Air Command Defense Information Network. That name dates it to the early 1990s, because the Strategic Air Command no longer exists as an entity. There are different cultures at different launch sites; others call the system “SACCS,” which is a more modern name. But as of April, 2010, floppy disks were still being used to reboot the system when it crashed.
— Nuclear Fail: Is START in Trouble?
