Jaguar was the first tactical support fighter developed jointly in the UK and France in 1965, and five types of single and double seats were developed. Above all, the Royal Air Force's GR Mk.1 has an excellent navigation / attack system and is equipped with a digital computer and a laser ranging instruction target detection device to enable supersonic low-air intrusion. The French Air Force Type A has also been equipped with a laser range finder on the nose of the 80th aircraft and beyond to improve its capabilities.