U.S. Marines have returned to northern Australia as part of a six-month training tour across the South Pacific that will also include drills in the Philippines and Indonesia.

They’ll be supported by Marine Medium Tiltrotor Squadron 268 out of Hawaii flying MV-22 B Osprey aircraft.

Ospreys began flying again this month after being grounded following the Nov. 29 crash of an Air Force Osprey off the coast of Japan that killed eight airmen. An Osprey crash in Australia in August killed three Marines attached to Marine Medium Tiltrotor Squadron 363 during last year’s rotation to the Northern Territory.

In Australia, the Marines will join numerous training events, including Southern Jackaroo, which typically involves Japanese troops; Bhakti Kanyini AUSINDO, which involved Indonesian forces last year; and the aviation-focused Pitch Black, Diamond Storm and HELICON LUK.