A U.S. military helicopter made an emergency landing in Japan's Okinawa islands in the second such incident in three days.
The plane lies at a depth of about 18,500 feet, making its salvage the deepest recovery effort of an aircraft to date.
A Marine Corp aircraft dubbed "Chilly Willy" will now take up residence at Wright-Patterson Air Force Base.
With four turboprop engines and a wingspan of 127 feet, the "Kunlong" aircraft can stay airborne for 12 hours.
Lost for 70 years, the C-47 aircraft was accidentally discovered in 2015 at a junkyard in Oshkosh, Wis.
Mattis said the U.S. and Russia are still using a phone line to coordinate flight movements over crowded Syrian skies.
A pilot has traced a virtual Christmas tree over Germany on a test flight with an Airbus A380.
A-10 Thunderbolts could be sent back to Afghanistan to bolster the air campaign.
The Marine Corps is investigating after yet another incident involving U.S. military aircraft in Japan.
The late Marine Corps Maj. Harry Glen Knickelbein had a wonderful life.