Leathernecks often say if it's not raining, they're not training. The next time thousands of them deploy to Australia's Northern Territory, that could very much be true.

The Marine Corps announced this week that it would delay an annual rotation Down Under due to the novel coronavirus pandemic. Thousands of California- and Hawaii-based Marines -- along with MV-22 Ospreys, AH-1Z Vipers, UH-1Y Venoms and RQ-21 Blackjacks -- were scheduled to deploy to Darwin this spring.

The Marine Corps is still sending vehicles and other supplies to Australia in anticipation of the rotation happening this year. Australian authorities have strict quarantine and inspection requirements.