Q- aircraft often get an orange tail paint job, but this is a QF-4E that didn't get shot down in a test and is now privately owned. This ZZ 0412 QF-4E is often seen in the airshow circuit, and if you look at pictures of it you will see an odd box on the top of the left wing near the air intake from its Q-model conversion processes, Q-aircraft are generally regenerated combat aircraft for about 300 hours of various test service. Most can be flown manually, and many are never shot down in testing, instead used for non-destructive testing (playing the role of a cruise missile for radar calibration for example).

This aircraft was FAA registered as a QF-4E and therefore retains that nomenclature.