The Australian Institute of Emergency Services has published a three page article I wrote about the Blue Mountains Community, which is always on the edge not just because it is perched on cliff tops but also because the sound of helicopters makes people nervous.  You can read the article on pages 16-18 of the Summer 2025-26 edition or here: https://mountainsmishaps.com.au/wp-content/uploads/2026/02/Blue-Mountains-a-city-always-on-the-edge.pdf 

AIES membership costs $80 p.a. The AIES web page is here: http://www.aies.net.au 

The whole journal can be downloaded from here, although at the moment it is only available to members.