They have hauled aerial fire retardant and will provide other airlift support
The Canadian Armed Forces are sending aircraft to Australia to assist with the unprecedented number bushfires that have been plaguing the eastern side of the continent for months. At least one of the aircraft will be a CC-177 Globemaster III, similar to the C-17 used in the United States and Australia.
Their plans are to transport dry fire retardant mix from the U.S. to Australia, provide airlift support to Australia, and provide imagery support for two hard hit areas in Victoria. The images acquired will support fire prediction modeling and enhance the efficiency of firefighting efforts on the ground.