There is no hope of finding 4 missing Aussie servicemen alive after their helicopter crashed into the sea during a training exercise on Friday night. Defence Minister Richard Marles delivered the assessment yesterday afternoon, saying the search-and-rescue effort had returned “significant wreckage from the helicopter”, but the operation is now focused on recovering the men’s remains. Marles also said, “there will be a full investigation, and we will … learn the lessons from it” – and he confirmed the Taipan helicopter fleet “will not fly again” until the cause of the crash is known. Chief of Defence Angus Campbell wouldn’t be drawn on what went wrong, saying “it’s not time now for careless or speculative comments.”