Data from the watch shows he died less than an hour before his body was recovered.
Marine Corps Air Station Iwakuni
Aviators' antics included reading, hair grooming and letting go of aircraft controls while posing for in-flight photos.
A report found that inadequate training also contributed to a deadly refueling mission; four leaders were fired.
Twenty-four years after the Marine Corps got its first female aviator, another woman pilot is making history.
The Navy appears to have detected "pingers" from a KC-130J tanker and F/A-18D Hornet involved in a deadly midair collision.
Five KC-130 Hercules crew members died in a Dec. 6 accident off Japan.
The five Marines are still missing after a KC-130J Hercules collided midair with an F/A-18 Hornet off Japan last week.
The search continued Monday for five Marines who went missing after their KC-130 Hercules collided with an F/A-18 Hornet.
A Marine refueling plane and a fighter jet crashed into the Pacific Ocean off Japan's southwestern coast after colliding.
Search-and-rescue operations are underway after an F/A-18 Hornet and KC-130 refueling tanker both crashed early Thursday.