SPOKANE, Wash. -

The Department of Defense says 2 Air Force Academy graduates are among the three airman killed in the crash of a military tanker refueling plane in the mountains of Kyrgyzstan were from Fairchild Air Force Base.

The airmen were assigned to the 93rd Air Refueling Squadron at the Washington Air Force base.

They died May 3, near Chon-Aryk, Kyrgyzstan, in the crash of a KC-135 aircraft.

Killed were: 27-year-old Capt. Mark T. Voss of Colorado Springs, Colo., and 27-year-old Capt. Victoria A. Pinckney of Palmdale, Calif. Both graduated from the Air Force Academy. 

30-year-old Tech Sgt. Herman Mackey III of Bakersfield, Calif. was also killed in the crash.

Capt. Voss was just promoted to that rank last May.  In March he became an Aircraft Commander.

Capt. Pinckney leaves behind her 7-month-old son Gabriel and a husband.

The military said the cause of the crash is still under investigation.