The final variant of the Gorgon family to be produced was the Pollux, a pulsejet test vehicle based on the Gorgon IIC, which was flown between 1949 and 1951. However, in 1950, the onset of the Cold War and the hot war in Korea led to the proposal to develop the Gorgon IV airframe into a chemical-weapons dispenser vehicle, designated Gorgon V; work on Gorgon V continued until late 1953, when the program was cancelled, the Gorgon program drawing to a close.