| abstract | - William Lewis "Bud" Uanna (May 13, 1909 – December 22, 1961) was a United States security expert. Uanna held many top security positions, including being a security officer on the Manhattan Project and Chief of the Division of Physical Security at the Department of State. Uanna joined the Army in May 1941, and was commissioned in November 1942. Assigned to the Counter Intelligence Corps, he served on the staff of I Service Command and the X Corps. In August 1943, he became an instructor at its school in Chicago, where he wrote a manual on physical security. He joined the Manhattan Project in late 1943, and in August 1944, was appointed Security Officer at Oak Ridge, Tennessee, one of the Manhattan Project's largest sites. In February 1945, he assumed command of the 1st Technical Service Detachment, which was responsible for the security of 509th Composite Group, including its personnel, bases and equipment. After the he accompanied the Manhattan Project team sent to survey the damage done by the atomic bombing of Hiroshima and Nagasaki. In 1947, he was chosen by the newly created Atomic Energy Commission (AEC) to head its program to provide security clearances to its personnel, for which he named and developed the criteria for the Q clearance. He was an administrative officer at the Central Intelligence Agency from 1949 to 1951, and was the special assistant to the Secretary of Commerce. He was responsible for physical security at the State Department from 1953 until his death in Addis Ababa in 1961.
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