Geoff retired from the Royal Australian Air Force in July 2015 as Air Marshal in the position of Chief of Air Force. In a 35-year career, he commanded at all levels in the Air Force and flew Chinook helicopters, F-111s and F/A-18 as well as being a flying instructor and a member of the Roulette Aerobatic team. His operational service included Operation Iraqi Freedom where he was the operational commander for all RAAF assets.
Among his qualifications, Geoff holds a BEng (Mech), a Master of Arts (Strategic Studies), Fellow of the Institute of Engineering Australia and is a Fellow of the Royal Aeronautical Society.
Since leaving the Air Force he has been appointed as a Director of Lockheed Martin (Australia), a Director of Electro Optic Systems, Chairman of the Sir Richard Williams Foundation, Chairman of the Advisory Board of CAE Asia Pacific and a Director of GCB Stratos Consulting. Geoff also mentors in Leadership and Strategic Studies at the Australian Defence College.
His honours and awards include his appointment as an Officer in the Order of Australia, the United States Legion of Merit and the Meritorious Service Medal from Singapore.