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Brent Clark

CEO's Welcome

I just wanted to take this opportunity to say hi to all the members of AIDN. I am a passionate supporter of ensuring that Australian companies have the chance to compete for work on all Australian Defence programs and that you all can compete in a fair and equitable manner. This should be an exciting time for Australia’s Defence Industry and I know that many of you are being frustrated. My role is to advocate loudly and often for you. I will call out poor behaviour and praise good work. I intend to be heavily connected to CASG and Government ensuring that you and your businesses are not forgotten nor disregarded.

I hope to be out and about engaging as soon as this COVID lockdown allows me too.


Brent Clark


On behalf of our Board, members and affiliates, welcome to the AIDN National website.  AIDN National is the principle representative organisation for small to medium enterprises (SMEs) working in the Defence and Security sectors.  AIDN seeks to assist members throughout Australia by networking and information sharing to enhance business opportunities with Defence and Defence prime contractors, and initiatives which improve management skills and expertise. 

Our organisation maintains a regular dialogue with the Federal Government departments across the Defence sector.

If you are already a member I invite you to use this website as a resource, if you are a visitor please consider joining AIDN through the state chapters via the application page on the website.  If you have any questions regarding this website or AIDN please contact the AIDN National Executive Officer Mel Woon so that she can assist you with your queries.


Email board@aidn.org.au

Chairman of the Board - Graham Priestnall   

Since leaving the RAN in 1999 Graham Priestnall has held several roles with Australian defence industry companies. Graham has worked for large and small companies, including managing his own company. He has significant experience in management and business development and currently work for DEWC Systems, an Adelaide based EW and Space industry company.

As a member of AIDN for 20 years, Graham has held AIDN leadership positions at both the Chapter and National level. These include President of AIDN-WA, Chairman of AIDN-ACT and holding several roles on the former AIDN National Executive, including National President. Graham is a passionate advocate of defence and security industry SMEs and looks forward to leading the AIDN National Board.

Board Member & Secretary - Carl Quarterman  

Board Member - Emily Frizell     

Board Member & Treasurer - Julie Savage

Board Member - Toff Idrus

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