Don't you keep some F-16s down there as well?
I was in Curacao on vacation 2 years ago and was driving around the back side of the airport (the military side). At that time there were several military aircraft there including 2 USAF AWACs, 1 USAF KC-135, 1 USN P-3, 1 USCG C-130, and 1 RNAF twin engine transport.
I don't know if this was the usual amount of aircraft that were normally based there or not , but with this much surveillance capability there would be little chance for a surprise attack.