Had Belgian police jump out at a stoplight many years ago when I was driving a German-registered vehicle, measure the tyre tread depth and then ask me for my international carnet. Once they got over the shock of me not being German, and once I'd checked that their chromed uniform numbers weren't covered with black tape, I asked what the game was. "We're tired of Germans using Belgium to slow down before the ferry".
Sums it up, really. The only way to get a Belgian F16 up high enough to do an intercept before the miscreant is in someone else's airspace is to invent a runway device that goes "boing".