The owner of one of Australia's major television networks lives in Perth....he has major business interests in West Australia.
I suspect he would own a private jet...so my money would be on the fact that there is a television crew down the back.
This is the same network that had a cameraman on-board the Australian navy vessel that picked up Tony Bullimore. The cameraman was smart enough to stick a network branded cap on Mr Bullimore's head, just before he went public.
I had the same thoughts that there would be media on board the Gulfstream.
AMSA is doing a great job with its media kits including TV camera ready graphics and hi-res photos. You can see the number one engine loitered on an AP-3C in some of the cockpit shots. Why number one? No generator on that motor.