In my opinion, McCormack should be looking more closely at his staff, his Department and CASA because it's actually their failure if they didn't realise Khokani was a shonky operator and warn the Minister.
That is one of the most important functions of a good public servant - to be well enough "connected" and to have a good built - in "BS detector" to protect Ministers from unfortunate liaisons like this because there are any number of Khokanis out there trying for a photo with the Minister or better still: a letter of commendation or an award. There will be students who started with SOAR because they saw the Ministers visit as an endorsement of the company. Same goes double for Mildura.
In particular, I find it absolutely perverse that CASA appears to have attacked APTA and Glen Buckley while either not being aware of, or ignoring, the safety problems and questionable practices that were then apparent at SOAR.