A US Navy sailor has fallen overboard during military exercises in the Timor Sea just north of Australia, triggering a massive search.
Rescue crews have been operating around the clock in an attempt to locate the man who has been missing since Monday.
Australian assets are being contributed to the search and rescue operation led by the US, which has yet to yield any results.
The sailor was reported missing from the nuclear-powered USS George Washington aircraft carrier which is still sailing in the Timor Sea, northwest of Darwin.
It remains in the area while more than 40,000 military personnel from 19 countries take part in Exercise Talisman Sabre.
