Probably the F-16F used by the UAE. The pilots are trained by the AZ ANG. If you check Cybermodeler, you'll find shots of them with half UAE, half USAF markings. It is really strange, though. It's not uncommon for the US (or another country) to sell aircraft to someone, and then train that country's pilots on their own aircraft. This makes even more sense if the aircraft differ from standard USAF machines, as is the case with the UAE.
- Brad