All these new fangled Gee Pee Esses and carpet pooters.... Not in my day, we navigated by the stars and listened to ol' jim on his harp....
Seriosuly tho, its an ingenious system all round. Kudos to the US government for making it available. Totally understandable they retain rights of control etc.
I have a question though, as far as "military grade" GPS goes, do other countries militaries have access to it? I'm just curious, but I'd assume they'd keep it tight with maybe a few close allies allowed access...