Years ago, I toured an active Navy ship of some kind of other (pretty big ship). When we got to the command center area, I noticed that all of the individual computers were running Windows 9x (the ones they used to check email), but that the one hooked up to the projector with the location of all ships in the Navy on a map was running some form of Redhat 5 and GNOME. When I pointed this out to them, they turned off the project in a hurry :) (someone had forgotten to turn it off before we came in)
i'm sure it did... it was a world map of the entire fleet. i was touring as part of a boyscout troop at the time, and someone dropped the ball and forgot to turn it off... and they were very, very nervous when i pointed out the screen that was turned on :)