The two helicopters were heard to use the radio callsign of "Tomahawk 11" and have been identified as Sikorsky HH-60H Seahawks which are flown by the Helicopter Sea Combat Squadron 85 (HSC-85) "Firehawks", which is a United States Navy Reserve helicopter squadron based at Naval Air Station North Island, San Diego, California.
The two Seahawks spotted arriving into Rockhampton Airport look to be 163784 / NW-300 and 165121 / NW-313.
Of interest, four HH-60H Seahawks of the HSC-85 "Firehawks" were based at Rockhampton Airport during Exercise Talisman Saber 2013 - as shown in the photo below.
Sincere thanks to all the local plane spotters in Longreach and Rockhampton who took the time to capture and send through these great photos of a couple of great arrivals into Rocky today!
Photos taken by 'AC', Ben O'Dowd and Daniel Bishop ©