https://www.milsurps.com/images/impo..._Georgia-1.jpg
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I suspect the knife on this bloke's belt is one of these: Australian Military Knives - Utility Knives
Halfway down the page, East Bros. knives.
Looks about right. He'd have picked it up while there...makes sense.
I was thinking it looked more like a Marine Raider stiletto, the blade looks narrower than the other knife, to me.
Hard to say now.