As posted previously, the two helicopters have been identified as 167833 / NF-611 and 167871 / NF-621 and are flown by the Helicopter Sea Combat Squadron 12 (HSC-12) "Golden Falcons" which are presently deployed and assigned with CVW-5 on board USS Ronald Reagan (CVN 76) which is sailing off the East coast of Australia.
The two Knighthawks originally arrived into Rockhampton Airport (possibly) from the Ship a couple of weeks ago and they have been noted and photographed completing 2-3 daily sorties to Shoalwater Bay and back to Rocky. For each of their flights, the pair of Knighthawks have been heard to use the radio callsign of "Hunter 71".
Sincere thanks to local plane spotter Daniel B for taking the time to capture and send through these great photos!
All photos taken by Daniel Bishop ©