Reports on Twitter indicate that two USA military aircraft have crashed during a midair refueling operation off Iwakuni, Japan.
Details remain extremely limited at this time, but what we know is that a two-seat F/A-18D collided with a KC-130, supposedly during a refueling operation off the coast of Japan.
The planes involved are a KC-130 and an F/A 18, carrying a total of seven personnel, United States media quoted officials as saying.
One of the missing Marines has been rescued alive, said 2nd Lt. Alyssa J. Morales, a spokeswoman for the 1st Marine Aircraft Wing.
The Marine Corps said Japanese search-and-rescue aircraft immediately responded to aid in recovery efforts.
"The aircraft involved in the mishap had launched from Marine Corps Air Station Iwakuni and were conducting regularly scheduled training when the mishap occurred", according to a Marine Corps Base Camp Butler statement on Wednesday.
The KC-130 is an extended-range tanker version of the C-130 and is used for mid-air refuelling. The statement added that the incident was under investigation. Check back for updates.