Jimmie Bales Garrett, 60, a deputy chief of staff for operations of the Army Intelligence and Security Command who had worked for the Army in a civilian capacity at Arlington Hall Station since 1943, died Dec. 23 at Fairfax Hospital after a heart attack. He lived in Falls Church.

Mr. Garrett was a native of Rose Hill, Va. He began his government career as a civilian employe of the Army Signal Corps in 1942. A year later, he came to this area and took a post at Arlington Hall with old Signal Security Service. In 1947, he became an administrative supervisor with the newly organized Army Security Agency's security division.

Between 1950 and 1952, he edited the Army's Transmission Security Bulletin, then attended an Army staff officers course. From 1962 to 1968, he was senior watch officer in the agency's operations division. Also in the 1960s, he attended the Army management course. By 1973, he was deputy chief of staff for operations of Army Security Agency. He held the same title in the agency's successor organization after it was established in 1977. He held that post until his death.

Mr. Garrett received the Army Department's Civilian Meritorious Service Award, the Exceptional Meritorious Service Award, and the Superior Performance Award.

Survivors include his wife, the former Mary Shifflett, and daughter, Georgia Garrett, both of Falls Church; three brothers, John, of Mulberry, Fla., Frank, of Springfield, and George, of Indianapolis, and a sister, Nancy Brooks of Mulberry.