Because I live in South Africa and during my stint in the military as a spec ops medic we did live fire training at Army Battle school.
The Impala guys would do ground attack runs on the "enimy area" with the guns and rockets before we would move in for CCB in mech infantry formations.
They would usually come in just after the fast-jets did their ultra low level bombing runs.(now THAT was impressive!)
I work as a mechanic for an arobatic display team end one of those guys was a fast jet driver, the other guy at out local IPMS in Johannesburg was an Impala driver.Interestingly there is an Impala standing about 20m away from the IPMS entrance, so it would be unwize to so my model as a SAAF plane....it is to eazy to see the mistakes if compared to the real one LOL
Theuns