Ultramarine blue and Air Force yellow are the Air Force colors. Blue alludes to the sky, the primary theater of Air Force operations. Yellow refers to the sun and the excellence required of Air Force personnel. The six white stars, arranged in the shape of the constellation Ursa Major (Big Dipper), signify the six elements of the unit--command, control, computers, communications, intelligence and weather. The larger star in the position of Polaris represents the Eleventh Air Force. This star is tilted to the left, reminiscent of the Eleventh Air Force insignia. The six stars represent the support that the Center provides to its major command.