Terry Allen Damon, 54, a retired Navy commander who became director of the Navy Memorial Museum, died of leukemia Oct. 25 at the Bethesda Naval Hospital. He lived in McLean.

Cmdr. Damon was born in Washington. A graduate of Coolidge High School, he earned a bachelor's degree at the University of Michigan. He joined the Navy in 1953, and from 1961 to 1963, was assigned to the U.S. Embassy in Iran as the naval attache for air. He later served three tours of duty in Vietnam.

He was assigned to the Defense Intelligence Agency in 1971. He became assistant director of the Navy Memorial Museum in 1976 and director of the museum in 1978. He retired from the Navy with the rank of commander in 1981 and continued his job as a civilian until his death.

Cmdr. Damon was a member of the Council of American Maritime Museums.

His marriage to Shirley Damon ended in divorce.

Survivors include his wife, Janet Ryon Damon of McLean; three children by his first marriage, Diana Carlin of Reston, Denise, of Vienna, and Andrew, of McLean; three stepchildren, C. Ronald Ryon of Hyattsville, Marine Corps 1st Lt. Richard Ryon of El Toro, Calif., and Army 2nd Lt. David Ryon, who is serving in Korea; two brothers, Norman, of Vienna, and Robert, of Bethesda, and one grandchild.