Two U.S. Marine aircraft crashed early Thursday during a refueling drill, leaving five crew members missing after two were rescued off the coast of Kochi Prefecture later in the day.

A KC-130 air-refueling tanker and an F/A-18 fighter jet were involved in what the military termed a "mishap" in the early morning hours. One crew member was rescued later in the morning by the Maritime Self Defense Force and sent to a hospital, while another was rescued later in the day, according to the Japanese Defense Ministry. The Marine Corps said the second marine had been transported to a local hospital. One of the two was a crew member of the F/A-18.

The F/A-18 had two crew members while five were aboard the KC-130.