In December 2018, a U.S. Marine Corps KC-130J was refueling a F/A-18 over Okinawa, Japan, when they aircraft made contact.  Both the F/A-18 and KC-130J went down, only one person survived.

It was not until the end of May of 2019 that the KC-130J’s cockpit voice recorder and digital flight recorder, along with human remains.  And it was not until June of 2019 that the information was made public.  As the investigation is still ongoing no further details were released.