The current sensors used in the system may have insufficient night acuity for pilots used to flying with night vision goggles ( NVG ) .
The current sensors used in the system are therefore augmented by an embedded NVG camera in the helmet .
The current sensors used in the system may have insufficient night acuity for pilots used to flying with night vision goggles ( NVG ) , and are therefore augmented by an embedded NVG camera in the helmet .