Looking beyond the obvious problem here, just curious why the admin ran chkdsk /f for no reason, then did it on 6 more systems after observing it caused ntfs failure.
https://m.xkcd.com/242/ maybe. One hopes the reporter had backups (or was testing on disposable systems) before trying to reproduce a data-loss condition.
He only found that there was a problem when the ones started earlier finished and rebooted.
By then it was too late for 7 machines but he was able to stop it on the rest.