The Mustang that might have been

Had World War Two continued, maybe the RAF and US Army Air Force would have operated the lightweight P-51F Mustang. It certainly impressed Supermarine’s test pilots when they got their hands on one XP-51F With the war nearly over, Supermarine’s test pilots were still flying all sorts of Spitfires and Seafires. Both types had plenty of years left in service, and would need further enhancements. But in April 1945 there came an unusual diversion for Jeffrey Quill and Patrick Shea-Simonds: