Well, without being too specific, I need a key to use as an event toggle that isn't likely to be needed for anything else. Now, there aren't any other ships in the mission area that the player could give orders to, and support ships have been disabled, so there's really no purpose for the Comm menu in the mission, making the 'C' button the logical choice. However, there is considerable mission dialogue associated with the mission, so destroying the Comms system is not high on the list of options. I can live with having the Comm menu coming up every time the toggle is used, but I'd like to avoid it if possible.