They seem to have something against 8-inch floppies.
The U.S. Defense Department is still using — after several decades — 8-inch floppy disks in a computer system that coordinates the operational functions of the nation's nuclear forces, a jaw-dropping new report reveals.
The Defense Department's 1970s-era IBM Series/1 Computer and long-outdated floppy disks handle functions related to intercontinental ballistic missiles, nuclear bombers and tanker support aircraft, according to the new Government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.
Although there is the old bromide that says "Real men don't have floppy disks", this seems to be one of those rare situations in which less tech is the best tech, despite the GAO's recommendation for immediate upgrades. With no USB ports, no connections to the Internet, and floppy drives that nobody uses any more, it seems that any "upgrades" would actually have the effect of downgrading security.