02/28/2007. Remarks by Bernhard Klein: "The M.D.453 Mystère III N, of which three prototypes were ordered, was in fact a derivative of the Mystère II with lateral intakes. Intended as a night fighter, the type was sometimes referred to as Mystère de Nuit (Mystery of the Night). First flight of first prototype took place on July 18, 1952. After the first prototype had flown 146 flight tests by December 1953, the program was terminated, and the second and third prototypes were cancelled. The one and only M.D.453 III N was subsequently used to test ejection seats."