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 term checky, like a checkerboard, is symbolic of military organization as units of soldiers upon a field of battle. The blue quarters are for valor and courage, qualities strongly manifested by the 363d Tactical Reconnaissance Group during World War II and also present today in the Group and its assigned units. The fourth quarter with the lion rampant upon a red field is emblematic of the Group's courageous and victorious participation in the Battle of the Bulge and for the citation and award of the Belgian Fourragère by the Government of Belgium.