In August 1952, Convair's design was judged superior. According to Gunston and Gilchrist, Boeing's submission was viewed as equally good, but their separate contract to produce the Boeing B-52 Stratofortress had undoubtably influenced this competition. In December 1952, Convair was chosen to meet the new SAB-51 (Supersonic Aircraft Bomber) and SAR-51 (Supersonic Aircraft Reconnaissance) standards, the first General Operational Requirements (GOR) for supersonic bombers. In February 1953, the Air Force issued a contract for Convair's design, designated "B-58" on 10 December 1952.