In which year did John Paul Harvey, a senior officer in the Australian Defence Force, retire following his post as Chief Capability Development Group?
John Harvey (RAAF officer) Air Marshal John Paul Harvey {'1': ", '2': ", '3': ", '4': "} (born 4 September 1954) was a senior officer in the Royal Australian Air Force (RAAF) until his retirement at the end of 2011. He held the position of Chief Capability Development Group from October 2010 until December 2011.
John Day (RAF officer) Air Chief Marshal Sir John Romney Day, (born 15 July 1947) is a retired senior Royal Air Force commander and a military advisor to BAE Systems.