The Lockheed Constellation series of aircraft was a successful design that initially began as a militarized transport, appearing in limited numbers towards the end of World War 2, that gained more fame in the civilian transport airliner role soon after. The system was based on the military concept of long-range transport and refined design, incorporating various elements into the fold that would produce one of Lockheed's most memorable models. Initial models were flown as early as 1943 though the end of the war saw just 22 examples delivered for military use. It must be said that the Constellation's performance was up to expectations, the plane reached a speed of 347mph... the same as the best fighters of the period. An order for 150 C-69C given by the USAF at the beginning of 1945 was canceled with the end of the war in the Pacific in September of the same year. At their height the orders had reached 260 Connies, a figure which was reduced first to 73 before in the end the supply contracts were all canceled. In all 22 examples of C-69 were made for the USAF in two batches; the last seven aircraft were directly sold to civilian operators.