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 crossroads represent the honors bestowed on the Wing by the 37th Pursuit Group--honors the Group earned in WWII serving as the "Defenders of the Crossroads," the Panama Canal. In 1953, the Air Force gave the Wing permission to adopt the 37th Pursuit Group's insignia and motto, "Defenders of the Crossroads," as the Wing's official heraldry.