WASHINGTON, Feb. 13 -- The U.S. Department of Defense issued the following news release: The secretary, U.S. Air Force, announces the following general officer assignments: Maj. Gen. Charles S. Corcoran will be assigned as assistant deputy chief of staff, operations, Headquarters U.S. Air Force, The Pentagon, Washington, D.C. Corcoran is currently serving as commander, U.S. Air Force Warfare Center, Air Combat Command, Nellis Air Force Base, Nevada. Maj. Gen. Case A. Cunningham will be assign  more