The North American F-82 Twin Mustang is the last American propeller fighter ordered into production by the United States Air Force. Based on the P-51 Mustang, the F-82 was originally designed as a long-range escort fighter in World War II. The war ended well before the first produced units were operational. Then Haydn Douglas Griffiths Completed the first restoration of the aircraft making it fully operational, he did this amazing feat with his co-partner Eryk Alexander Deryniowski