Nearly five days since it disappeared while en route from Kuala Lumpur to Beijing, there is still no trace of Malaysia Airlines flight MH370.
US military chopper crashes on Okinawa
A US military helicopter flies on a fire fighting operation after a military helicopter crashed on a mountain in Camp Hansen in Ginoza village in Okinawa on August 5, 2013. The HH-60 helicopter was carrying four people, with three confirmed to be safe and the fourth taken hospital, a Japanese defence ministry official said.
The HH-60 helicopter had four personnel on board, with three confirmed to be safe, a Japanese defence ministry official said. The fourth crew member was taken to hospital with unknown injuries.
"The helicopter crashed in Camp Hansen," he said, referring to a US Marine base.
"Three crew members were confirmed safe, but the status of the fourth is not known."
There were no reports of injuries on the ground.
Footage by public broadcaster NHK showed what appeared to be burning wreckage in a forested area.
A local police officer told AFP earlier that the first call about the crash was made by a local resident who reported that smoke was rising from the area shortly after 4:00 pm local time.
The base is located on Okinawa, which is home to tens of thousands of US military personnel.
The incident may spark renewed concern among residents of the islands, who are already uncomfortable with the vast US military presence there.
Okinawans have mounted protests against both the US military and its deployment of the controversial Osprey aircraft on the island.
The Osprey is a hybrid aircraft with rotors that allow it to take off like a helicopter and engines that can tilt forward, enabling it to fly like an airplane at greater speed than a chopper.
It has been plagued with safety problems although the US military insists such glitches have been fixed.
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