WASHINGTON (AP) — Air Force Special Operations Command said Tuesday it has recovered the remains of six of the eight service members who were lost when their Osprey crashed off the coast of Japan last week, adding it is now focused on recovering the two bodies still missing and the aircraft debris.

The CV-22B Osprey crashed on Nov. 29 during a training mission. Ospreys have had a number of crashes, including in Japan, where they are used at U.S. and Japanese military bases, and the latest has rekindled safety concerns.

“The depth of sorrow is immeasurable,” Lt. Gen. Tony Bauernfeind, who heads Air Force Special Operations Command, said in a statement announcing the names of the crew. “The honorable service of these eight airmen to this great nation will never be forgotten, as they are now among the giants who shape our history.”

The lost crew members were:

U.S. Air Force Maj. Jeffrey T. Hoernemann, 32, of Andover, Minnesota, was a CV-22 instructor pilot and officer in charge of training, assigned to the 21st Special Operations Squadron, 353rd Special Operations Wing, Yokota Air Base, Japan.

U.S. Air Force Maj. Eric V. Spendlove, 36, of St. George, Utah, was a residency trained flight surgeon and medical operations flight commander assigned to the 1st Special Operations Squadron, 353rd Special Operations Wing, Kadena Air Base, Japan.

U.S. Air Force Maj. Luke A. Unrath, 34, of Riverside, California, was a CV-22 pilot and flight commander assigned to the 21st Special Operations Squadron, 353rd Special Operations Wing, Yokota Air Base, Japan.

U.S. Air Force Capt. Terrell K. Brayman, 32, of Pittsford, New York, was a CV-22 pilot and flight commander assigned to the 21st Special Operations Squadron, 353rd Special Operations Wing, Yokota Air Base, Japan.

U.S. Air Force Tech. Sgt. Zachary E. Lavoy, 33, of Oviedo, Florida, was a medical operations flight chief assigned to the 1st Special Operations Squadron, 353rd Special Operations Wing, Kadena Air Base, Japan.

U.S. Air Force Staff Sgt. Jake M. Turnage, 25, of Kennesaw, Georgia, was a flight engineer assigned to the 21st Special Operations Squadron, 353rd Special Operations Wing, Yokota Air Base, Japan.

U.S. Air Force Senior Airman Brian K. Johnson, 32, of Reynoldsburg, Ohio, was a flight engineer assigned to the 21st Special Operations Squadron, 353rd Special Operations Wing, Yokota Air Base, Japan.

U.S. Air Force Staff Sgt. Jacob “Jake” M. Galliher, 24, was a native of Pittsfield, Mass. His remains were the first to be found.