@AC (Was: Re: Gawd/ess.)
"Some of the time you want the progamming tools connected to the corporate LAN, for perfectly valid reaons."
What part of "air gap" do you not understand?
Stuxnet demonstrated that humans and SneakerNet prove that most corporate/national security have absolutely zero clue about security.
As a side-note, my programmable logic controllers are quite adequately managed by one of the BSDs (and sometimes Slackware). Microsoft products aren't used in these here parts.