 The Orions have subsequently formed an important part of Operation Resolute, the Australian Defence Force's contribution to patrolling Australia's Exclusive Economic Zone.As part of this operation Orions fly regular missions around Australia's western and northern approaches and report the results of their patrols to Maritime Border Command.AP-3Cs also periodically conduct patrols over the Indian Ocean, Strait of Malacca and South China Sea from RMAF Butterworth in Malaysia as part of Operation Gateway.