A major search operation is continuing in New South Wales for 18-year-old Lily Hooper, who has been missing for seven days after failing to return from a bushwalk in Nattai National Park. The search has now been significantly expanded, with almost 100 Australian Defence Force personnel joining emergency services and other search teams working across the challenging national park terrain.

Lily was reported missing after she did not return from her planned hike on August 12. Since then, emergency crews have been conducting an extensive search of the surrounding bushland. The operation has involved multiple agencies and specialist personnel working to identify areas where she may have travelled.

On Wednesday, August 19, almost 100 Defence personnel from Holsworthy Barracks joined the operation. Their involvement provides additional manpower and specialist experience as authorities continue searching through difficult sections of the national park.

Nattai National Park presents significant challenges for search teams. The area contains extensive bushland and difficult terrain, making it necessary for search crews to carefully examine large sections of the park. Teams must work systematically while managing the physical demands associated with searching remote Australian wilderness.

The Defence personnel joining the operation include people with experience in demanding outdoor environments. Their skills can provide additional support to emergency services as the search enters its second week.

Army survival instructor Gordon Dedman said many of the soldiers involved were familiar with operating in challenging environments. Their experience may be particularly useful when search teams are required to work through difficult terrain and changing conditions.

The expanded operation reflects the continuing priority being placed on finding Lily. Search crews are working across areas of interest and examining possible routes and locations where she could have travelled.

The operation is also an example of different emergency and government organisations working together during a major missing-person response. Police, emergency services, volunteers and Defence personnel can contribute different skills and resources, allowing a wider and more coordinated search.

As the operation continues, authorities remain focused on locating Lily and determining what happened after she began her hike. Search teams are continuing to assess available information and use it to guide their efforts across the national park.

The involvement of Defence personnel represents a substantial increase in the number of people available to conduct the search. With additional personnel now working alongside established search teams, authorities can cover more areas and continue the operation across challenging sections of the park.

For Lily's family and friends, the continuing search is an extremely important effort. The operation remains focused on bringing her home safely, while emergency personnel continue working through the difficult environment.

Authorities have not indicated that the search has been abandoned or scaled back. Instead, the arrival of additional Defence personnel demonstrates that significant resources are still being committed to the operation.

The search for Lily Hooper remains an active and developing emergency response in New South Wales. Police and search teams are continuing their work in Nattai National Park, with the expanded operation now involving Defence personnel alongside emergency services and other searchers.