A23-022, A23-020, 031 and A23-032 Pilatus PC-9/A(F) from No. 4 Squadron, RAAF, near RAAF Base Williamtown – 26 August 2019. 4 Squadron took the opportunity to fly all four of their PC-9/A(F) aircraft (A23-020, A23-022, A23-031, and A23-032) on a formation farewell flight from their base at RAAF Williamtown, near Newcastle, NSW. The formation flew over Newcastle, north to Bulahdelah, then south along the coast past Port Stephens lighthouse and Nobbys Head, prior to a return to RAAF Base Williamtown. Photo: CPL Craig Barrett © Commonwealth of Australia, Department of Defence.