Any NVG operator in Australia may operate without displaying navigation lights. There are Police and EMS operators that operate NVG.
CAO 82.6 refers:
"7 Exemption — navigation lights
Under subregulation 308 (1) of CAR 1988, the operator and the pilot in command of a helicopter in an NVG operation are each exempt from compliance with subregulation 195 (1) of CAR 1988 for a navigation lighting requirement of Part 13 of CAR 1988 if he or she is complying with a lighting requirement of this Order that is at variance with the requirement of Part 13.
Note The pilot in command should put a note in the free text section of the flight notification to advise air traffic control that he or she is goggle equipped and may be operating without displaying lights."