Miami Air to Darwin


In Darwin (Australia) on Saturday 26 August there was an arrival of a Miami Air charter, apparently carrying US Marines, who have a base there. The technical crew were dead heading on a QF flight to Sydney.
One of the QF crew mentioned that the Miami 737 had taken a very long route (I don’t know the origin) to Darwin. I guess this was because of ETOPS.
I can’t find any record of the flight or route.
Perhaps for security reasons Flight Aware does not record it?
Just curious.