Back about 12-15 years ago, I was the system administrator for a meteorology system the Air Force used that operated on Linux/Red Hat. I hated that system with a passion, not because of how it ran, but because no one else in the unit could maintain the darn thing. I was happy the day that administrator rights were pulled from the units and sent to HQ AF Weather. They would then dial into it to maintain it, but I'm sure that is long gone by now.