I'd be willing to bet that, given the size of the z-20, that the gentleman in the middle seat is some kind of instructor or examiner. He's the only one without a helmet and it's fairly common practice for instructors to sit in the jump seat in aviation.One more cockpit image. I wonder if this is the full standard crew complement: two pilots + three other (gunners/crew chiefs + flight engineer?)
Interesting to add, according to the photographer‘s original image link this particular aircraft was/is still prototype number 6220 and it was taken on my birthday on 30th January 2024.
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I wonder what made them identify it as 6220. I can't spot it on the airframe itself in the image.