In "Firefox", an Anglo-American intelligence scheme inserts Gant into the Soviet Union in order for him to steal one of the two prototypes of a revolutionary fighter plane, the MiG-31, NATO code name "Firefox" (not to be confused with the real MiG-31, a development of the MiG-25). After crossing the Soviet Union from Moscow to the airbase where the Firefox is being developed, with the help of various MI6 agents and several false identities; dissident scientists involved in the project create a diversion allowing Gant to steal the plane. He then deals with several obstacles and, after dispatching the second prototype in a dogfight, has apparently succeeded in his theft.