The United States Air Force Security Service (USAFSS) command emblem symbolizes the command mission. It consists of a shield divided equally into quarters by a vertical and horizontal line and identifying scroll. Significant of the command's worldwide influence, the first quarter is blue, thereon a green sphere with yellow land markings. Pertinent to transmission, the second quarter is red, thereon a yellow lightning streak. Significant of the United States Air Force, the third quarter is yellow, thereon a blue half wing. Symbolic of protection and security, the fourth quarter is blue, thereon over a sword with point to base (hilt and pommel yellow), a white shield, thereon a yellow flame shaded red. The emblem was approved by Headquarters USAF in August 1952.