Sgt. Tyler M. Rankin, 24, of Kansas City, Mo., disappeared off the coast of Hamada Beach in Shimane prefecture.
A 21-year-old soldier from Texas was killed Friday in southwestern Afghanistan, Pentagon officials announced Saturday night.
He was found unconscious in the base swimming pool.
A report concluded that Tech. Sgt. Peter Kraines died because rock climbing protective gear dislodged from the rock crevice.
A probe found "disturbing revelations" surrounding a Bradley fighting vehicle accident that took the life of a young soldier.
While there was an initial inquiry to find out who packed the malfunctioning parachute, there was no follow-up investigation.
The NTSB repeated criticism of the Coast Guard, saying the agency had ignored its recommendations to improve the boats.
Cpl. Eloiza Zavala, a motor vehicle operator with Combat Logistics Battalion 13, was pronounced dead at the scene.
Pfc. Joseph Del Hierro, a 26-year-old Miami native, died from his injuries, according to an 82nd Airborne news release.
A partial power failure during bad weather caused an F-16 fighter jet from Spangdahlem Air Base to crash last fall.