 Complete the following phrase:  No. 81 Wing is responsible for operating the a hrefMcDonnell20Douglas20FA-1820HornetMcDonnell Douglas FA-18 Horneta multi-role fighters of the Royal Australian Air Force RAAF. Headquartered at RAAF Base Williamtown, New South Wales, the wing comprises three combat units, Nos. 3 and 77 Squadrons based at Williamtown and No. 75 Squadron at RAAF Base Tindal, Northern Territory, as well as an operational conversion unit at Williamtown. No. 81 Wing headquarters oversees squadron training in air-to-air and air-to-ground tactics, and support for the Australian Army and Royal Australian Navy. Tasked with offensive and defensive counter-air operations, the Hornets have been deployed to Diego Garcia in 200102, when they provided local air defence, to 