The decoration is awarded to any citizen of the United States who performs distinguished achievement or outstanding contribution, on or after 26 July 1947, in the field of intelligence relating to the national security of the United States of America.
The National Security Medal is authorized to both civilians and personnel of the United States military and is an authorized decoration for display on active duty uniforms of the United States armed forces. As a civilian award, the National Security Medal is worn after all U.S. military awards and before any foriegn decorations.